Build com_dotnet shared by default

The official Windows builds and CI are doing this for ages, so it
appears to be overdue to finally switch the actual default.

Closes GH-16300.

.github/scripts/windows/build_task.bat

@@ -36,7 +36,6 @@ set CFLAGS=/W1 /WX
 cmd /c configure.bat ^
 	--enable-snapshot-build ^
 	--disable-debug-pack ^
-	--enable-com-dotnet=shared ^
 	--without-analyzer ^
 	--enable-object-out-dir=%PHP_BUILD_OBJ_DIR% ^
 	--with-php-build=%DEPS_DIR% ^

UPGRADING

@@ -147,6 +147,11 @@ PHP 8.5 UPGRADE NOTES
   PHP_RELEASE_VERSION are now always numbers.  Previously, they have been
   strings for buildconf builds.
 
+* COM:
+  . The extension is now build shared by default; previously it defaulted to a
+    static extension, although the official Windows binaries built a shared
+    extension.
+
 * FFI:
   . It is no longer necessary to specify the library when using FFI::cdef()
     and FFI::load(). However, this convenience feature should not be used in

ext/com_dotnet/config.w32

@@ -1,6 +1,6 @@
 // vim:ft=javascript
 
-ARG_ENABLE("com-dotnet", "COM and .Net support", "yes");
+ARG_ENABLE("com-dotnet", "COM and .Net support", "yes,shared");
 
 if (PHP_COM_DOTNET == "yes") {
 	CHECK_LIB('oleaut32.lib', 'com_dotnet');