fix(format/html): resolve some edge cases with whitespace

[dyc3]

Summary

This PR aims to resolve some mismatches with prettier preservation of whitespace in whitespace sensitive contexts. It also does some refactoring to help make determining whitespace sensitivity easier.

Test Plan

Snapshots updated.

[dyc3]

Most notably, this PR resolves the mismatch with prettier for this test case:

<span>123</span>
<span>
123</span>
<span>123
</span>
<span>
123
</span>

<div>123</div>
<div>
123</div>
<div>123
</div>
<div>
123
</div>

[codspeed-hq]

CodSpeed Performance Report

Merging #5148 will not alter performance

_{Comparing html-whitespace-quirks (bec640a) with main (d739883)}

Summary

✅ 94 untouched benchmarks