🐛 Bug: Replace deprecated substr in getFindResultsByGlobalRegExp

[PrateekSingh070]

Describe the bug

getFindResultsByGlobalRegExp.ts still calls String.prototype.substr, which is deprecated in modern JavaScript/Node runtimes. Linters warn about it, and we risk future runtime compatibility issues.

Steps To Reproduce

1. Open jsonSchemaLatest\website\lib\getFindResultsByGlobalRegExp.ts .
2. Locate the calculation of inMatchGroupOffset .
3. Run ESLint or TS with deprecation rules to see the warning.

Expected Behavior

Use a supported method such as slice so the helper stays lint-clean and future-proof.

Screenshots

no

Device Information [optional]

Are you working on this issue?

Yes

Do you think this work might require an [Architectural Decision Record (ADR)]? (significant or noteworthy)

No

[PrateekSingh070]

@Utkarsh-123github assign this issue #1958 to me

[Adityakumar37]

@Utkarsh-123github i would like to work on this issue