Add banner support for UMD builds and adjust SWC comment handling (#7639) (#7646)

Author: marklundin

utils/rollup-build-target.mjs

@@ -210,6 +210,7 @@ function buildTarget({ moduleFormat, buildType, bundleState, input = 'src/index.
                 swcPlugin({ swc: swcOptions(isDebug, isUMD, isMin) })
             ],
             output: {
+                banner: isUMD ? getBanner(BANNER[buildType]) : undefined,
                 plugins: getOutPlugins(),
                 file: `${dir}/${OUT_PREFIX[buildType]}${isUMD ? '.js' : '.mjs'}`
             },

utils/rollup-swc-options.mjs

@@ -16,7 +16,7 @@ function swcOptions(isDebug, isUMD, minify) {
             target: isUMD ? 'es5' : 'es2022',
             minify: {
                 format: {
-                    comments: !isDebug || minify ? false : 'all'
+                    comments: !isDebug || minify ? 'some' : 'all'
                 },
                 mangle: minify,
                 compress: (!isDebug && minify) ? {