[clang] [analyzer] Remove some false negatives in StackAddrEscapeChecker (PR #125638)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-cmake-x86_64-avx512-linux` running on `avx512-intel64` while building `clang` at step 6 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/133/builds/11126

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (build stage 1) failure: 'ninja' (failure)
...
[61/124] Linking CXX executable bin/llvm-profgen
[62/124] Linking CXX executable bin/llvm-link
[63/124] Linking CXX executable bin/sancov
[64/124] Linking CXX executable bin/llvm-jitlink
[65/124] Linking CXX executable bin/llvm-extract
[66/124] Linking CXX executable bin/diagtool
[67/124] Linking CXX executable bin/clang-installapi
[68/124] Linking CXX executable bin/clang-diff
[69/124] Linking CXX executable bin/clang-refactor
[70/124] Building CXX object tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o
FAILED: tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o 
/usr/bin/c++ -DCLANG_EXPORTS -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/stage1/tools/clang/lib/StaticAnalyzer/Checkers -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/lib/StaticAnalyzer/Checkers -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/include -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/stage1/tools/clang/include -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/stage1/include -I/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/llvm/include -march=cascadelake -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o -MF tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o.d -o tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/StackAddrEscapeChecker.cpp.o -c /localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/lib/StaticAnalyzer/Checkers/StackAddrEscapeChecker.cpp
/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/lib/StaticAnalyzer/Checkers/StackAddrEscapeChecker.cpp:252:28: error: declaration of ‘const clang::StackFrameContext* FindStackRegionsSymbolVisitor::StackFrameContext’ changes meaning of ‘StackFrameContext’ [-fpermissive]
  252 |   const StackFrameContext *StackFrameContext;
      |                            ^~~~~~~~~~~~~~~~~
In file included from /localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/include/clang/Analysis/ProgramPoint.h:17,
                 from /localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/include/clang/StaticAnalyzer/Core/Checker.h:16,
                 from /localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/include/clang/StaticAnalyzer/Core/BugReporter/BugType.h:18,
                 from /localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/lib/StaticAnalyzer/Checkers/StackAddrEscapeChecker.cpp:17:
/localdisk2/buildbot/llvm-worker/clang-cmake-x86_64-avx512-linux/llvm/clang/include/clang/Analysis/AnalysisDeclContext.h:299:7: note: ‘StackFrameContext’ declared here as ‘class clang::StackFrameContext’
  299 | class StackFrameContext : public LocationContext {
      |       ^~~~~~~~~~~~~~~~~
[71/124] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
[72/124] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/125638