Disable no-unnecessary-type-arguments lint rule

[som-sm]

Because of certain recent changes in the @typescript-eslint/no-unnecessary-type-arguments rule, our test files now have multiple errors (see run).

This PR disables this rule.

• We don’t want this rule in our test files, as we need explicit type arguments there.

• It also feels unnecessary in source files. And, there appears to be some bug as well, for example:

  type Test<T, U = unknown> = [T, U];
  type T1<T extends unknown[]> = Test<string, T[number]>;
  //                                          ~~~~~~~~~
  // This is the default value for this type parameter, so it can be omitted. (@typescript-eslint/no-unnecessary-type-arguments)

  In this case, Test<string> is not equivalent to Test<string, T[number]>, but the rule reports an error, which it shouldn't.

[som-sm]

TS v6 also got released yesterday, because of which npm install typescript@latest now has peer dependency issues (see run):

npm error Could not resolve dependency:
npm error peer typescript@">=4.8.4 <6.0.0" from @typescript-eslint/parser@8.57.2
npm error node_modules/@typescript-eslint/parser

Should we temporarily add the --legacy-peer-deps flag while installing (refer 2969233)?