fix: prevent merging of :host(tag) and tag css rules (#349)

Author: MapTo0

packages/main/config/postcss.components/postcss.config.js

@@ -4,14 +4,15 @@ const postcssCSStoESM = require('../../lib/postcss-css-to-esm/index.js');
 const cssnano = require('cssnano');
 
 module.exports = {
-  plugins: [
-    postcssNesting(),
-    postcssAddFallback({importFrom: "./dist/css/themes/sap_fiori_3/parameters-bundle.css"}),
+	plugins: [
+		postcssNesting(),
+		postcssAddFallback({importFrom: "./dist/css/themes/sap_fiori_3/parameters-bundle.css"}),
 	cssnano({preset: [
 		'default', {
 			mergeLonghand: false, // https://github.com/cssnano/cssnano/issues/675
+			mergeRules: false, // https://github.com/cssnano/cssnano/issues/730
 		},
 	]}, ),
-    postcssCSStoESM(),
-  ]
+		postcssCSStoESM(),
+	]
 };