Enable locale-independent strtod_l/strtof_l on Linux glibc (#9424)

Restrict the `__linux__` check for `FLATBUFFERS_LOCALE_INDEPENDENT` in `include/flatbuffers/base.h` to `(!defined(__linux__) || defined(__GLIBC__))` so Linux with glibc enables `strtod_l`/`strtof_l`.

PiperOrigin-RevId: 1002266254

include/flatbuffers/base.h

diff --git a/include/flatbuffers/base.h b/include/flatbuffers/base.h
index 1d2ab58..1fc69ed 100644
--- a/include/flatbuffers/base.h
+++ b/include/flatbuffers/base.h
@@ -271,7 +271,7 @@
   #if (defined(_MSC_VER) && _MSC_VER >= 1800) || \
       (defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__>= 26) || \
       (defined(_XOPEN_VERSION) && (_XOPEN_VERSION >= 700)) && \
-      !defined(__Fuchsia__)
+      !defined(__Fuchsia__) && (!defined(__linux__) || defined(__GLIBC__))
     #define FLATBUFFERS_LOCALE_INDEPENDENT 1
   #else
     #define FLATBUFFERS_LOCALE_INDEPENDENT 0