[flutter_svg] svg asset does not attempt to load again after networking or other loading issue has been resolved #182486

Steps to reproduce

1. Include an svg asset with flutter_svg and flutter_gen on platform_web
2. Start the browser without requesting the asset yet
3. Turn off network completely - either naturally or through the browser developer options
4. Request the asset and fail of course to load it
5. Turn on the network
6. Refresh the widget with the asset, requesting again. Nothing happens

Expected results

After the loading problem resolves and the asset is requested again, the loading should be retried showing the asset.

Actual results

The asset does not load again, because the failed future stays in the pendingResults part of the svg cache

Code sample

[Paste your code here]

Screenshots or Video

Logs

[Paste your logs here]

Flutter Doctor output

[✓] Flutter (Channel stable, 3.38.9, on macOS 15.7.3 24G419 darwin-arm64, locale en-DE) [702ms]
• Flutter version 3.38.9 on channel stable at /Users/username/fvm/versions/3.38.9
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 67323de (3 weeks ago), 2026-01-28 13:43:12 -0800
• Engine revision 587c18f
• Dart version 3.10.8
• DevTools version 2.51.1
• Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, omit-legacy-version-file, enable-lldb-debugging

[✓] Chrome - develop for the web [10ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Connected device (2 available) [7.2s]
• macOS (desktop) • macos • darwin-arm64 • macOS 15.7.3 24G419 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 144.0.7559.133

[✓] Network resources [279ms]
• All expected network resources are available.

! Doctor found issues in 1 category.