Addresses #4684
#minor

Description

This PR fixes the new ESLint errors and warnings after upgrading the ESLint packages in the botbuilder-ai project.
Additionally, it adds the build step to the lint GitHub action to avoid import/no-unresolved errors when the eslint command runs without building the project.

Specific Changes

• Removed 'botbuilder-ai/eslint.config.cjs' file as it contained only the 'only-warn' plugin which was no longer needed.
• Applied the auto fix flag for most issues (spacing, trailing commas, indentation, and removal of unnecessary eslint exceptions).
• Applied manual fixes for new rules like 'no-constant-binary-expression'.
• Added the build step in the lint.yml file.

Testing

The following images show the number of issues fixed in the library.