[spdlog] Fix non-Windows builds with wchar feature enabled (#27740)

- Defining SPDLOG_WCHAR_TO_UTF8_SUPPORT on non-Windows platforms
  triggers an #error, restrict the wchar feature to Windows
- update port-version + vcpkg x-add-version spdlog

ports/spdlog/portfile.cmake

@@ -50,7 +50,7 @@ vcpkg_replace_string(${CURRENT_PACKAGES_DIR}/include/spdlog/tweakme.h
     "// #define SPDLOG_FMT_EXTERNAL"
     "#ifndef SPDLOG_FMT_EXTERNAL\n#define SPDLOG_FMT_EXTERNAL\n#endif"
 )
-if(SPDLOG_WCHAR_SUPPORT)
+if(SPDLOG_WCHAR_SUPPORT AND VCPKG_TARGET_IS_WINDOWS)
     vcpkg_replace_string(${CURRENT_PACKAGES_DIR}/include/spdlog/tweakme.h
         "// #define SPDLOG_WCHAR_TO_UTF8_SUPPORT"
         "#ifndef SPDLOG_WCHAR_TO_UTF8_SUPPORT\n#define SPDLOG_WCHAR_TO_UTF8_SUPPORT\n#endif"

ports/spdlog/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "spdlog",
   "version-semver": "1.10.0",
-  "port-version": 1,
+  "port-version": 2,
   "description": "Very fast, header only, C++ logging library",
   "homepage": "https://github.com/gabime/spdlog",
   "license": "MIT",
@@ -24,7 +24,8 @@
       ]
     },
     "wchar": {
-      "description": "Build with wchar_t (Windows only)"
+      "description": "Build with wchar_t (Windows only)",
+      "supports": "windows"
     }
   }
 }

versions/baseline.json

@@ -7086,7 +7086,7 @@
     },
     "spdlog": {
       "baseline": "1.10.0",
-      "port-version": 1
+      "port-version": 2
     },
     "spectra": {
       "baseline": "1.0.1",

versions/s-/spdlog.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "f7ad0e9d934ce7401fb68968f5392fddc7dd4e3a",
+      "version-semver": "1.10.0",
+      "port-version": 2
+    },
     {
       "git-tree": "3256ea88cc375fda2f977a2eb18435e23d498572",
       "version-semver": "1.10.0",