Minor react fixes

[gregfromstl]

PR-Codex overview

This PR fixes TransactionButton styles override issue and improves test reliability in MediaRenderer.

Detailed summary

• Fixed TransactionButton styles override with custom styles
• Updated MediaRenderer test to use waitFor for improved reliability

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[changeset-bot]

🦋 Changeset detected

Latest commit: 8898a67

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

Name	Type
thirdweb	Patch
@thirdweb-dev/sdk	Patch
@thirdweb-dev/cli	Patch
@thirdweb-dev/react-core	Patch
@thirdweb-dev/react	Patch
@thirdweb-dev/unity-js-bridge	Patch
@thirdweb-dev/wallets	Patch
@thirdweb-dev/auth	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[codspeed-hq]

CodSpeed Performance Report

Merging #3067 will not alter performance

_{Comparing greg/react-tests (8898a67) with main (f49f8ca)}

Summary

✅ 9 untouched benchmarks

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
thirdweb (esm)	39.22 KB (0%)	785 ms (0%)	2.3 s (+8.47% 🔺)	3.1 s
thirdweb (cjs)	88.71 KB (0%)	1.8 s (0%)	6.4 s (+5.2% 🔺)	8.2 s
thirdweb (minimal + tree-shaking)	4.75 KB (0%)	96 ms (0%)	266 ms (-47.54% 🔽)	361 ms
thirdweb/chains (tree-shaking)	423 B (0%)	10 ms (0%)	103 ms (+159.34% 🔺)	113 ms
thirdweb/react (minimal + tree-shaking)	15.09 KB (0%)	302 ms (0%)	492 ms (+49.69% 🔺)	794 ms

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.64%. Comparing base (85b5a6d) to head (8898a67).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3067      +/-   ##
==========================================
- Coverage   63.65%   63.64%   -0.02%     
==========================================
  Files         781      781              
  Lines       56050    56062      +12     
  Branches     3189     3189              
==========================================
  Hits        35678    35678              
- Misses      19703    19715      +12     
  Partials      669      669              

Flag	Coverage Δ		*Carryforward flag
legacy_packages	65.61% <ø> (ø)		Carriedforward from f49f8ca
packages	63.16% <100.00%> (-0.02%)	⬇️

*This pull request uses carry forward flags. Click here to find out more.

Files	Coverage Δ
...rdweb/src/react/web/ui/TransactionButton/index.tsx	78.50% <100.00%> (ø)