perf(define): create simple regex for checks

[bluwy]

Description

An optimization I intentionally left out (so it's easier to review) in #11151 is to optimize the created regex. Since we're not doing any replacement anymore, we don't need a complex regex for correctness.

We only need a simple regex to check the chances of replacing, and through some quick tests, I found the complex regex vs this simple regex can bring up to 6x faster regex.test() calls (~200ms vs ~30ms)

Additional context

---

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the PR Title Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[stackblitz]

Run & review this pull request in StackBlitz Codeflow.

[patak-dev]

Awesome! I think you can merge after fixing the conflicts