Hennadii Stepanov 51d36dfd07 qt: Fix -Wsfinae-incomplete warnings when building with GCC 16.x ...

According to the CMake documentation for `AUTOMOC`, all `moc` output
files that are not included in a source file are aggregated into the
CMake-generated `<AUTOGEN_BUILD_DIR>/mocs_compilation.cpp`, which is
added to the target's sources.

Within that single translation unit, `moc`-generated code checks the
completeness of a signal or slot parameter type while it is still only
forward-declared, and the type is completed later, when a subsequently
included `moc_*.cpp` file pulls in the header that defines it. GCC 16.x
diagnoses this pattern with the `-Wsfinae-incomplete` warning, which is
enabled by default.

Including the `moc` output files at the end of the corresponding source
files excludes them from `mocs_compilation.cpp`, so each one is
compiled in a translation unit where the relevant types are complete.

Additionally:
1. Some of the `BitcoinGUI` class's private members are gated with
   `#ifdef ENABLE_WALLET` to prevent `-Wunused-private-field` warnings
   when building with `-DENABLE_WALLET=OFF`.
2. `test/lint/lint-includes.py` is adjusted to allow new `#include`
   statements.

2026-07-20 12:23:51 +01:00

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