fix(core): label retry errors by attempt

[9aoy]

Summary

This PR makes retry-related failure output easier to inspect by annotating each collected retry error with the attempt it came from. Terminal Summary of all failing tests output now separates the initial attempt from retry attempts, and GitHub job summaries include the same labels in ## Failures details.

Checklist

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

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 13 projects in monorepo, 2 projects with changes.

📊 Quick Summary

Project	Total Size	Change
adapter-rsbuild	5.4 KB	0
adapter-rslib	25.6 KB	0
adapter-rspack	9.3 KB	0
browser	2.0 MB	0
browser-ui	809.5 KB	0
browser-react	6.4 KB	0
coverage-istanbul	18.8 KB	0
coverage-v8	19.4 KB	0
core/browser	1.1 MB	+209.0 B (0.0%)
core/loaders	869.0 B	0
core/main	1.9 MB	+884.0 B (0.0%)
vscode/extension	27.0 MB	0
vscode/worker	14.5 KB	0

📋 Detailed Reports (Click to expand)

📁 core/browser

Path: packages/core/.rsdoctor/browser/rsdoctor-data.json

📌 Baseline Commit: e67492d747 | PR: #1345

Metric	Current	Baseline	Change
📊 Total Size	1.1 MB	1.1 MB	+209.0 B (0.0%)
📄 JavaScript	973.6 KB	973.5 KB	+184.0 B (0.0%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	114.6 KB	114.6 KB	+25.0 B (0.0%)

📦 Download Diff Report: core/browser Bundle Diff

📁 core/main

Path: packages/core/.rsdoctor/main/rsdoctor-data.json

📌 Baseline Commit: e67492d747 | PR: #1345

Metric	Current	Baseline	Change
📊 Total Size	1.9 MB	1.9 MB	+884.0 B (0.0%)
📄 JavaScript	1.6 MB	1.6 MB	+726.0 B (0.0%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	293.8 KB	293.7 KB	+158.0 B (0.1%)

📦 Download Diff Report: core/main Bundle Diff

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