fix: [#4204] Fix remaining eslint warnings - botbuilder-lg

[sw-joelmut]

Addresses #4204
#minor

Description

This PR fixes the ESLint and JSDoc issues in the botbuilder-lg library.

Specific Changes

• Applied auto-fixes with yarn lint --fix.
  • Add trailing commas
  • Fix spacing.
  • Fix indentation.
  • Add blank line in between comments.
  • Fix quoting.
  • Replace arrow functions: () => with function ().
  • Replace let with const.
• Applied manual fixes for:
  • Missing documentation.
  • Unused parameters and imports.
  • Replacing hasOwnProperty calls.
  • Fixing lodash imports.

Testing

[coveralls]

Pull Request Test Coverage Report for Build 2656868923

• 43 of 45 (95.56%) changed or added relevant lines in 10 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.003%) to 84.479%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
libraries/botbuilder-lg/src/multiLanguageLG.ts	0	1	0.0%
libraries/botbuilder-lg/src/templatesParser.ts	0	1	0.0%

Totals
Change from base Build 2656737347:	-0.003%
Covered Lines:	19904
Relevant Lines:	22312

---

💛 - Coveralls