[Android] Do not clear url bar text on focus (uplift to 1.12.x)

[brave-builds]

Uplift of #5978
Resolves brave/brave-browser#10524

Approved, please ensure that before merging:

• You have checked CI and the builds, lint, and tests all pass or are not related to your PR.
• You have tested your change on Nightly.
• The PR milestones match the branch they are landing to.

After you merge:

• The associated issue milestone is set to the smallest version that the changes is landed on.

[kjozwiak]

Looks like build failed on macOS. However, this PR only touches Android related code as per the following:

• android/brave_java_sources.gni
• android/java/apk_for_test.flags
• android/java/org/chromium/chrome/browser/omnibox/suggestions/editurl/BraveEditUrlSuggestionProcessor.java
• android/javatests/org/chromium/chrome/browser/BytecodeTest.java
• build/android/bytecode/java/org/brave/bytecode/BraveClassAdapter.java
• build/android/bytecode/java/org/brave/bytecode/BraveEditUrlSuggestionProcessorClassAdapter.java
• build/android/bytecode/java_sources.gni
• patches/chrome-android-java-src-org-chromium-chrome-browser-omnibox-suggestions-AutocompleteMediator.java.patch

Because the PR basically only touches Android code, there's no need to re-run the failed macOS run.

[kjozwiak]

Uplift into 1.12.x approved after deliberating with @brave/uplift-approvers. QA has verified the PR on Nightly as per #5978 (comment).