[Bug]: Slither cannot parse event arguments from global scope

[Tiko7454]

Describe the issue:

Events don't work with constants declared in the global scope. Also, the bug was not present on version 0.10.0

Code example to reproduce the issue:

uint constant A = 3;

contract C {
  event ev(uint[A]);
}

Version:

0.10.1

Relevant log output:

'solc --version' running
'solc Treasury.sol --combined-json abi,ast,bin,bin-runtime,srcmap,srcmap-runtime,userdoc,devdoc,hashes,compact-format --allow-paths .,/home/tigran' running
Compilation warnings/errors on Treasury.sol:
Warning: SPDX license identifier not provided in source file. Before publishing, consider adding a comment containing "SPDX-License-Identifier: <SPDX-License>" to each source file. Use "SPDX-License-Identifier: UNLICENSED" for non-open-source code. Please see https://spdx.org for more information.
--> Treasury.sol

Warning: Source file does not specify required compiler version! Consider adding "pragma solidity ^0.8.7;"
--> Treasury.sol


Traceback (most recent call last):
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/__main__.py", line 852, in main_impl
    ) = process_all(filename, args, detector_classes, printer_classes)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/__main__.py", line 107, in process_all
    ) = process_single(compilation, args, detector_classes, printer_classes)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/__main__.py", line 80, in process_single
    slither = Slither(target, ast_format=ast, **vars(args))
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/slither.py", line 150, in __init__
    self._init_parsing_and_analyses(kwargs.get("skip_analyze", False))
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/slither.py", line 160, in _init_parsing_and_analyses
    raise e
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/slither.py", line 156, in _init_parsing_and_analyses
    parser.parse_contracts()
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/slither_compilation_unit_solc.py", line 542, in parse_contracts
    self._analyze_second_part(contracts_to_be_analyzed, libraries)
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/slither_compilation_unit_solc.py", line 629, in _analyze_second_part
    self._analyze_struct_events(contract)
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/slither_compilation_unit_solc.py", line 704, in _analyze_struct_events
    contract.analyze_events()
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/declarations/contract.py", line 755, in analyze_events
    event_parser.analyze()  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/declarations/event.py", line 54, in analyze
    elem_parser.analyze(self._slither_parser)
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/variables/variable_declaration.py", line 212, in analyze
    self._variable.type = parse_type(self._elem_to_parse, caller_context)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/solidity_types/type_parsing.py", line 430, in parse_type
    length = parse_expression(t["length"], caller_context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/expressions/expression_parsing.py", line 510, in parse_expression
    var, was_created = find_variable(value, caller_context, referenced_declaration)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/expressions/find_variable.py", line 397, in find_variable
    direct_contracts, direct_functions, current_scope = _find_variable_init(caller_context)
                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tigran/Projects/integrator/query-engine/venv/lib/python3.11/site-packages/slither/solc_parsing/expressions/find_variable.py", line 333, in _find_variable_init
    raise SlitherError(
slither.exceptions.SlitherError: <class 'slither.solc_parsing.slither_compilation_unit_solc.SlitherCompilationUnitSolc'> (<slither.solc_parsing.slither_compilation_unit_solc.SlitherCompilationUnitSolc object at 0x7b96b39ce090> is not valid for find_variable
ERROR:root:Error:
ERROR:root:<class 'slither.solc_parsing.slither_compilation_unit_solc.SlitherCompilationUnitSolc'> (<slither.solc_parsing.slither_compilation_unit_solc.SlitherCompilationUnitSolc object at 0x7b96b39ce090> is not valid for find_variable
ERROR:root:Please report an issue to https://github.com/crytic/slither/issues