Implicit Namespace Parsing Recovery

[ScottCarda-MS]

Fixes an issue where implicit namespace parsing would not recover after incomplete items. This is fixed by adding the end-of-file character as a recovery token.

Fixes #1794

[github-actions]

Benchmark for ba6e6cf

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Test	Base	PR	%
Array append evaluation	336.4±4.84µs	339.5±6.70µs	+0.92%
Array literal evaluation	194.6±4.08µs	174.8±1.21µs	-10.17%
Array update evaluation	413.2±14.35µs	416.3±2.06µs	+0.75%
Core + Standard library compilation	22.1±0.56ms	22.4±0.97ms	+1.36%
Deutsch-Jozsa evaluation	4.9±0.05ms	5.0±0.07ms	+2.04%
Large file parity evaluation	34.0±0.10ms	34.1±0.25ms	+0.29%
Large input file compilation	13.4±0.42ms	13.4±0.59ms	0.00%
Large input file compilation (interpreter)	53.0±2.27ms	52.2±1.69ms	-1.51%
Large nested iteration	32.4±0.37ms	33.0±0.39ms	+1.85%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1572.0±45.99µs	1585.4±96.60µs	+0.85%
Perform Runtime Capabilities Analysis (RCA) on large file sample	7.8±0.11ms	7.8±0.09ms	0.00%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1432.0±47.93µs	1454.5±119.82µs	+1.57%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	27.9±0.25ms	28.1±0.38ms	+0.72%
Teleport evaluation	91.7±5.68µs	93.5±4.13µs	+1.96%