add overflow and unsafe math tests

[SwayStar123]

Description

Adds some in language tests for overflow and unsafe math operations. Ensuring the operations revert

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[github-actions]

Benchmark for a7da720

Click to view benchmark

Test	Base	PR	%
code_action	4.9±0.01ms	5.0±0.08ms	+2.04%
code_lens	343.6±7.97ns	341.9±37.45ns	-0.49%
compile	1952.5±75.07ms	1923.5±64.65ms	-1.49%
completion	4.4±0.06ms	4.4±0.09ms	0.00%
did_change_with_caching	1890.1±15.90ms	1867.1±27.01ms	-1.22%
document_symbol	938.1±39.30µs	849.9±19.03µs	-9.40%
format	83.5±0.98ms	82.6±1.29ms	-1.08%
goto_definition	337.7±6.30µs	336.9±8.26µs	-0.24%
highlight	8.7±0.03ms	8.7±0.21ms	0.00%
hover	352.2±5.38µs	345.9±3.64µs	-1.79%
idents_at_position	117.2±0.37µs	117.6±0.54µs	+0.34%
inlay_hints	656.3±20.32µs	661.9±22.63µs	+0.85%
on_enter	2.0±0.13µs	2.0±0.06µs	0.00%
parent_decl_at_position	3.6±0.05ms	3.6±0.04ms	0.00%
prepare_rename	335.5±8.58µs	336.8±11.69µs	+0.39%
rename	9.0±0.19ms	9.0±0.07ms	0.00%
semantic_tokens	1219.1±6.53µs	1235.6±14.93µs	+1.35%
token_at_position	330.8±2.01µs	331.7±1.17µs	+0.27%
tokens_at_position	3.6±0.03ms	3.6±0.04ms	0.00%
tokens_for_file	397.2±1.60µs	396.8±3.04µs	-0.10%
traverse	34.0±0.58ms	34.6±1.15ms	+1.76%