[cleanup](iwyu) Remove unnecessary includes of glog/logging.h and boost/iterator_facade.hpp

[shuke987]

Summary

• Remove unnecessary #include <glog/logging.h> from 81 BE source files
• Remove unnecessary #include <boost/iterator/iterator_facade.hpp> from 55 BE source files
• Total: 136 files cleaned, 137 lines removed

These headers are transitively included through other headers and are not directly used in the affected files. Identified by include-what-you-use (IWYU 0.24 / Clang 20) analysis of the full BE codebase.

Test plan

• Full BE build passes with zero compilation errors after glog removal
• Incremental BE build passes with zero compilation errors after boost removal
• CI pipeline

🤖 Generated with Claude Code

[Thearas]

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