Chore: Refactor TemplateElement range fix

[fisker]

Fix ranges/locations/start/end in one step, and use TemplateElement.tail instead of slicing the original input.

[eslint-github-bot]

Hi @fisker!, thanks for the Pull Request

The first commit message isn't properly formatted. We ask that you update the message to match this format, as we use it to generate changelogs and automate releases.

• The commit message tag must be one of the following:

  The Tag is one of the following:

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  • Update - either for a backwards-compatible enhancement or for a rule change that adds reported problems.
  • New - implements a new feature.
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[eslint-github-bot]

Hi @fisker!, thanks for the Pull Request

The first commit message isn't properly formatted. We ask that you update the message to match this format, as we use it to generate changelogs and automate releases.

• The commit message tag must be one of the following:

  The Tag is one of the following:

  • Fix - for a bug fix.
  • Update - either for a backwards-compatible enhancement or for a rule change that adds reported problems.
  • New - implements a new feature.
  • Breaking - for a backwards-incompatible enhancement or feature.
  • Docs - changes to documentation only.
  • Build - changes to build process only.
  • Upgrade - for a dependency upgrade.
  • Chore - for anything that isn't user-facing (for example, refactoring, adding tests, etc.).

  You can use the labels of the issue you are working on to determine the best tag.

• There should be a space following the initial tag and colon, for example 'New: Message'.

Read more about contributing to ESLint here

[nzakas]

LGTM

[mdjermanovic]

LGTM, thanks for contributing!