feat: update regex for methods with thisArg

[fasttime]

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request? (put an "X" next to an item)

[ ] Documentation update
[ ] Bug fix (template)
[ ] New rule (template)
[X] Changes an existing rule (template)
[ ] Add autofix to a rule
[ ] Add a CLI option
[ ] Add something to the core
[ ] Other, please explain:

What rule do you want to change?

no-eval and no-invalid-this

What change do you want to make (place an "X" next to just one item)?

[ ] Generate more warnings
[X] Generate fewer warnings
[ ] Implement autofix
[ ] Implement suggestions

How will the change be implemented (place an "X" next to just one item)?

[ ] A new option
[X] A new default behavior
[ ] Other

Please provide some example code that this change will affect:

/* eslint no-eval: error */
array.findLast(function (x) { return this.eval.includes(x); }, { eval: ['foo', 'bar'] });

/* eslint no-invalid-this: error */
array.flatMap(function(value) { "use strict"; return this.doSomething(value); }, obj);

Playground Link

Find more examples in the updated unit tests.

What does the rule currently do for this code?

Report an error for each rule.

What will the rule do after it's changed?

Report no error.

What changes did you make? (Give an overview)

This PR updates a shared regex in ast-utils.js to add support for method names that were added to the spec since ES2019.

The regex is used in the rules no-eval and no-invalid-this to avoid flagging some special cases, trivially relying on the name of a method being called.
So the net effect of this PR will be less problems reported by those two rules.

The updated regex is intended to match names of built-in methods that expect a callback function as a first argument, and the value bound to this in calls to the callback as a second argument.
These are mostly methods of arrays and typed arrays, although forEach is also defined on sets and maps.

The new method names in this PR are:

• findLast (added in ES2023 to Array.prototype and TypedArray.prototype)
• findLastIndex (added in ES2023 to Array.prototype and TypedArray.prototype)
• flatMap (added in ES2019 to Array.prototype)

I've also renamed the regex for more clarity and added unit tests for the no-eval rule and extended the tests for no-invalid-this.

Is there anything you'd like reviewers to focus on?

• Should this be tagged fix or feat?
• The shared function astUtils.isDefaultThisBinding is currently only tested indirectly. Do we need any specific unit tests?

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[nzakas]

The change overall looks good to me. I left one suggestion.

I believe this should be "feat" because we are adding support for more recent methods.

[nzakas]

Should we keep "array" in the name?

Suggested change

	const methodWithThisArgPattern = /^(?:every|filter|find(?:Last)?(?:Index)?|flatMap|forEach|map|some)$/u;
	const arrayMethodWithThisArgPattern = /^(?:every|filter|find(?:Last)?(?:Index)?|flatMap|forEach|map|some)$/u;

[fasttime]

I think it's fine to keep array since these are all names of array methods at this time. We will notice if the situation will change one day. Updated in 01dfe5a, thanks.

[mdjermanovic]

LGTM, thanks! Leaving open for @nzakas to verify.

[nzakas]

LGTM. Thanks