fix(TextLoop): prevent separator duplication causing overlap (#1062)

[MauryaQbit]

Fixes #1062

Bug

TextLoop default props used text='React [star] Bits' with separator='[star]'. After uppercase the repeated unit became 'REACT [star] BITS[NBSP][star][NBSP]', i.e. two separators per repetition. The duplicated glyph breaks the textLength / lengthAdjust fit on the SVG path in stricter browsers (Firefox, wave shape), so a [star] can land on top of a letter (usually R of REACT).

Fix

• Change default text from 'React [star] Bits' to 'React Bits' in all 4 variants, demo DEFAULT_PROPS/prop table, and usage example.
• Harden unit construction: strip any separator occurrences from base, collapse whitespace, trim, then append exactly one '[NBSP][sep][NBSP]' gap. Legacy text containing the separator now converges to the same correct output. Empty separator still falls back to 3x NBSP.
• Applied to: src/content/.../TextLoop.jsx, src/tailwind/.../TextLoop.jsx, src/ts-default/.../TextLoop.tsx, src/ts-tailwind/.../TextLoop.tsx, plus TextLoopDemo.jsx and textLoopCode.js.

Review notes

• No API change; default rendering changes from 'REACT [star] BITS [star]' to 'REACT BITS [star]' per repetition (single separator, even rhythm).
• Custom text containing the separator is sanitized to one separator per unit per component contract ('Glyph placed between each repetition'). Whitespace is collapsed/trimmed to avoid double spacing at the junction.
• Separator case follows uppercase flag for visual consistency (no-op for glyphs like [star]).
• public/r registry JSONs intentionally untouched (generated artifacts, local jsrepo build shows only CRLF noise).

Tests

• Repo has no unit test script (package.json: dev/build/lint/format only).
• Verified: node unit-logic script 7/7 PASS (default, legacy default, custom with/without sep inside, text==sep, whitespace collapse, empty sep; all produce exactly 1 sep, 0 when empty).
• Verified: npx tsc --noEmit PASS (0 errors).
• Verified: npx eslint on changed JS files PASS (0 errors); full npm run lint shows 33 pre-existing errors on main, none in TextLoop files.
• Verified: npm run registry:build PASS (684 items). Full vite build timed out locally (>120s, large site) with no related errors.

[MauryaQbit]

@rorz can you review this pr

[rorz]

Confused as to why I am being mentioned here. This PR / issue has nothing to do with me.

[DavidHDev]

@rorz probably a mistake, feel free to disregard it