fix(android): log and clear webview creation errors

[tomatotomata]

Summary

• keep Android main-pipe failures from leaving a pending Java exception at the JNI boundary
• log the WebView creation error when tracing is enabled, clear the Java exception, and unregister the failing looper callback

Closes #1785

This is intentionally the minimal defensive part of the issue. It does not add an embedder callback for asynchronous creation failures, which would need a wider API design.

Validation

• cargo test --lib passed: 9 tests
• git diff --check passed
• rustfmt --check src/android/binding.rs reached the file but reports the repository's existing newline-style mismatch on this Windows checkout

The Android-specific path was not compiled locally because an Android target/toolchain is not installed here.

[github-actions]

Package Changes Through 89834af

There are 1 changes which include wry with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
wry	0.56.0	0.56.1

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