Windows tool_integration_tests_2_5 is 2.72% flaky

[flutterflakybot]

The post-submit test builder Windows tool_integration_tests_2_5 had a flaky ratio 2.72% for the past 15 days, which is above our 2.00% threshold.

One recent flaky example for a same commit: https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1250
Commit: flutter@36cee18
Flaky builds:
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1250
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1207
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1203
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1187
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1184

Succeeded builds (3 most recent):
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1280
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1279
https://ci.chromium.org/ui/p/flutter/builders/prod/Windows%20tool_integration_tests_2_5/1278

Please follow https://github.com/flutter/flutter/wiki/Reducing-Test-Flakiness#fixing-flaky-tests to fix the flakiness and enable the test back after validating the fix (internal dashboard to validate: go/flutter_test_flakiness).