Resolve multiple libphonenumber ftbfs

This MR addresses multiple ftbfs issues in libphonenumber:

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1108579
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1116075
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1126173

Changes:

• enable annotation processing for Java 25
• Skip setting C++ standard to resolve ftbfs with string_view
• Apply proposed patch to escape unicode bidi-char
• Disable deprecated declarations warning to resolve latest absl build failure (see https://github.com/abseil/abseil-cpp/commit/6d8e1a5cf00d6a6b26069b0baf0dd9b855a17459) and allow building with the current absl version.

Testing:

• rebuild in resolute (absl failure)
• rebuild in sid (checked that I have not introduced a breaking change)
• rebuild with Java 25 default.