fix: Set CMAKE_MSVC_DEBUG_INFORMATION_FORMAT to Embedded for Windows

With CMP0141 NEW (added in sentry-native 0.13.5 for sccache support),
CMAKE_MSVC_DEBUG_INFORMATION_FORMAT takes precedence over /Z7 in the
compiler flags, defaulting to /Zi (external PDB). This causes LNK4099
warnings for consumers linking sentry-native.lib without the PDB.

See https://cmake.org/cmake/help/latest/policy/CMP0141.html

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jpnurmi

src/Sentry/Platforms/Native/windows-config.cmake

@@ -1,3 +1,8 @@
 # Include debug info in the static library itself. See https://github.com/getsentry/sentry-native/issues/895 for context.
 set(CMAKE_C_FLAGS_RELWITHDEBINFO "/Z7 /O2 /Ob1 /DNDEBUG" CACHE STRING "C Flags for RelWithDebInfo" FORCE)
-set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Z7 /O2 /Ob1 /DNDEBUG" CACHE STRING "CXX Flags for RelWithDebInfo" FORCE)
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Z7 /O2 /Ob1 /DNDEBUG" CACHE STRING "CXX Flags for RelWithDebInfo" FORCE)
+# With CMP0141 NEW (CMake 3.25+), CMAKE_MSVC_DEBUG_INFORMATION_FORMAT takes
+# precedence over /Z7 in the flags above. Set it explicitly to ensure debug
+# info is embedded (/Z7) rather than stored in an external PDB (/Zi).
+# See https://cmake.org/cmake/help/latest/policy/CMP0141.html
+set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "Embedded" CACHE STRING "Debug info format" FORCE)