flutter: do not log /etc/os-release read error

Apps using flutter may fail to build with this error:
Failed obtaining PRETTY_NAME for Linux: PathNotFoundException: Cannot open file,
path = '/usr/lib/os-release' (OS Error: No such file or directory, errno = 2)

Nix build sandbox doesn't have /usr/lib/os-release and /etc/os-release files.

Changed files
+12
pkgs
development
compilers
+12
pkgs/development/compilers/flutter/patches/do-not-log-os-release-read-failure.patch
···
+
diff --git a/packages/flutter_tools/lib/src/base/os.dart b/packages/flutter_tools/lib/src/base/os.dart
+
index 9134a014f8d..0410f328c66 100644
+
--- a/packages/flutter_tools/lib/src/base/os.dart
+
+++ b/packages/flutter_tools/lib/src/base/os.dart
+
@@ -316,7 +316,6 @@ class _LinuxUtils extends _PosixUtils {
+
final String osRelease = _fileSystem.file(osReleasePath).readAsStringSync();
+
prettyName = _getOsReleaseValueForKey(osRelease, prettyNameKey);
+
} on Exception catch (e) {
+
- _logger.printTrace('Failed obtaining PRETTY_NAME for Linux: $e');
+
prettyName = '';
+
}
+
try {