feat!: use rspackHotUpdate as default hotUpdateGlobal

[LingyuCoder]

Summary

This PR changes the default value of output.hotUpdateGlobal from webpackHotUpdate to rspackHotUpdate. This change helps differentiate Rspack's HMR runtime from webpack's, making it clearer which bundler is being used when inspecting the global scope during development.

This is a breaking change for users who rely on the default hotUpdateGlobal value, but it aligns with Rspack's branding and avoids potential conflicts when both webpack and Rspack are used in the same environment.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[github-actions]

📦 Binary Size-limit

Comparing 4b26937 to fix(browser): update worker format and add e2e test (#12747) by CPunisher

🎉 Size decreased by 324.63KB from 47.99MB to 47.68MB (⬇️0.66%)

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 5 projects with changes.

📊 Quick Summary

Project	Total Size	Change
react-10k	5.7 MB	-37.0 B (-0.0%)
react-1k	825.3 KB	-29.0 B (-0.0%)
react-5k	2.7 MB	-28.0 B (-0.0%)
rome	985.8 KB	+1.7 KB (0.2%)
ui-components	2.1 MB	-30.0 B (-0.0%)

📋 Detailed Reports (Click to expand)

📁 react-10k

Path: ../build-tools-performance/cases/react-10k/dist/rsdoctor-data.json

📌 Baseline Commit: 5b35090e32 | PR: #12747

Metric	Current	Baseline	Change
📊 Total Size	5.7 MB	5.7 MB	-37.0 B (-0.0%)
📄 JavaScript	5.7 MB	5.7 MB	-37.0 B (-0.0%)
🎨 CSS	21.0 B	21.0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-10k Bundle Diff

📁 react-1k

Path: ../build-tools-performance/cases/react-1k/dist/rsdoctor-data.json

📌 Baseline Commit: 5b35090e32 | PR: #12747

Metric	Current	Baseline	Change
📊 Total Size	825.3 KB	825.4 KB	-29.0 B (-0.0%)
📄 JavaScript	825.3 KB	825.4 KB	-29.0 B (-0.0%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-1k Bundle Diff

📁 react-5k

Path: ../build-tools-performance/cases/react-5k/dist/rsdoctor-data.json

📌 Baseline Commit: 5b35090e32 | PR: #12747

Metric	Current	Baseline	Change
📊 Total Size	2.7 MB	2.7 MB	-28.0 B (-0.0%)
📄 JavaScript	2.7 MB	2.7 MB	-28.0 B (-0.0%)
🎨 CSS	21.0 B	21.0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-5k Bundle Diff

📁 rome

Path: ../build-tools-performance/cases/rome/dist/rsdoctor-data.json

📌 Baseline Commit: 5b35090e32 | PR: #12747

Metric	Current	Baseline	Change
📊 Total Size	985.8 KB	984.2 KB	+1.7 KB (0.2%)
📄 JavaScript	985.8 KB	984.2 KB	+1.7 KB (0.2%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: rome Bundle Diff

📁 ui-components

Path: ../build-tools-performance/cases/ui-components/dist/rsdoctor-data.json

📌 Baseline Commit: 5b35090e32 | PR: #12747

Metric	Current	Baseline	Change
📊 Total Size	2.1 MB	2.1 MB	-30.0 B (-0.0%)
📄 JavaScript	2.0 MB	2.0 MB	-30.0 B (-0.0%)
🎨 CSS	83.0 KB	83.0 KB	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: ui-components Bundle Diff

Generated by Rsdoctor GitHub Action