Add an exclusion to prevent building full-page of interactivity-router

The full-page wpScriptModuleExport defined in interactivity-router
should not be bundled in Wordpress core yet as it is experimental.
There is no mechanism in wpScriptModuleExports right now that supports
building a script module but not including it in core. Since this
is likely to be a rare instance we have opted to hard-code an
exclusion in core's build until this module is no longer experimental.

Author: samueljseay

tools/webpack/script-modules.js

@@ -48,6 +48,13 @@ for ( const packageName of MODULES.concat( SCRIPT_AND_MODULE_DUAL_PACKAGES ) ) {
 	for ( const [ exportName, exportPath ] of Object.entries(
 		wpScriptModuleExports
 	) ) {
+		// Exclude the experimental './full-page' export from @wordpress/interactivity-router.
+		// This export is defined in Gutenberg's package.json but should not be bundled in Core
+		// as the feature is still experimental and not ready for inclusion.
+		if ( moduleName === 'interactivity-router' && exportName === './full-page' ) {
+			continue;
+		}
+
 		if ( typeof exportPath !== 'string' ) {
 			throw new Error( 'wpScriptModuleExports paths must be strings' );
 		}