add breakpoint for debugging

[MikeKlemarewski]

Summary:

Issue: XXX-XXXX

Test plan:

[github-actions]

Size Change: +13 B (0%)

Total Size: 1.27 MB

Filename	Size	Change
packages/perseus/dist/es/index.js	417 kB	+13 B (0%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	39 kB
packages/keypad-context/dist/es/index.js	760 B
packages/kmath/dist/es/index.js	4.27 kB
packages/math-input/dist/es/index.js	78 kB
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-core/dist/es/index.js	1.48 kB
packages/perseus-editor/dist/es/index.js	688 kB
packages/perseus-linter/dist/es/index.js	22.2 kB
packages/perseus/dist/es/strings.js	4.93 kB
packages/pure-markdown/dist/es/index.js	3.67 kB
packages/simple-markdown/dist/es/index.js	12.5 kB

_{compressed-size-action}

[github-actions]

npm Snapshot: NOT Published

Oh noes!! We couldn't find any changesets in this PR (01982b9). As a result, we did not
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