Conaclos(js semantic): use range start as binding identifier

[Conaclos]

Summary

Until now, bindings are identified by their text range. Binding text ranges don't overlap.
Thus, bindings can also be identified by the start of their text range.
This PR uses the range start instead of the range as binding identifier.

Test Plan

Tests should pass.

[Conaclos]

!bench_analyzer

[github-actions]

Parser conformance results on

js/262

Test result	main count	This PR count	Difference
Total	49701	49701	0
Passed	48642	48642	0
Failed	1059	1059	0
Panics	0	0	0
Coverage	97.87%	97.87%	0.00%

jsx/babel

Test result	main count	This PR count	Difference
Total	40	40	0
Passed	37	37	0
Failed	3	3	0
Panics	0	0	0
Coverage	92.50%	92.50%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	6322	6322	0
Passed	2036	2036	0
Failed	4286	4286	0
Panics	0	0	0
Coverage	32.20%	32.20%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	662	662	0
Passed	592	592	0
Failed	70	70	0
Panics	0	0	0
Coverage	89.43%	89.43%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	17646	17646	0
Passed	13454	13454	0
Failed	4190	4190	0
Panics	2	2	0
Coverage	76.24%	76.24%	0.00%

[github-actions]

Analyzer Benchmark Results

group                     main                                   pr
-----                     ----                                   --
analyzer/css.js           1.00      4.5±0.00ms     2.7 MB/sec    1.00      4.5±0.00ms     2.7 MB/sec
analyzer/index.js         1.00      9.3±0.04ms     3.3 MB/sec    1.01      9.4±0.06ms     3.3 MB/sec
analyzer/lint.ts          1.00      6.8±0.00ms     6.1 MB/sec    1.01      6.9±0.04ms     6.0 MB/sec
analyzer/parser.ts        1.00     14.2±0.04ms     3.4 MB/sec    1.02     14.4±0.01ms     3.4 MB/sec
analyzer/router.ts        1.00      4.5±0.00ms     5.3 MB/sec    1.01      4.5±0.00ms     5.2 MB/sec
analyzer/statement.ts     1.00     13.1±0.02ms     2.7 MB/sec    1.01     13.3±0.05ms     2.7 MB/sec
analyzer/typescript.ts    1.00     20.9±0.03ms     2.6 MB/sec    1.01     21.1±0.02ms     2.6 MB/sec