Remove LESS stylesheets and dependencies (#27409)

* Remove components, core and modules LESS stylesheets

* Remove variables LESS stylesheets

* Remove app LESS stylesheets

* Remove github-sync, onboarding LESS stylesheets

* Remove main-light and IEEE LESS stylesheets

* Remove Less loader configuration

* Remove bootstrap-3 entrypoint

* Rename bootstrap-5 entrypoint to bootstrap

* Remove bootstrap-5 CSS folder and move stylesheets

* Update CSS variables

* Restore and update github-sync.scss path

* Fix try-premium.scss path and fix undefined mixin error

* Restore entrypoints

* Simplify buildCssPath to always use main-style.css

* Remove less from prettier formatting scripts

* Remove less from addHook extension

* Source format

* Remove nvd3 file reference from prettierignore (equivalent of nvd3.scss)

* Remove less and less-loader

* Add SCSS files to pirates require hook

GitOrigin-RevId: bd83c79f4d6ef7305d75993959a4dc5e7714ef9c

package-lock.json

@@ -18261,6 +18261,8 @@
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       "integrity": "sha512-1j20GZTsvKNkc4BY3NpMOM8tt///wY3FpIzozTOFO2ffuZcV61nojHXVKIy3WM+7ADCy5FVhdZYHYDdgTU0yJw==",
       "dev": true,
+      "optional": true,
+      "peer": true,
       "dependencies": {
         "is-what": "^3.14.1"
       },
@@ -20711,6 +20713,7 @@
       "integrity": "sha512-dJ6oBr5SQ1VSd9qkk7ByRgb/1SH4JZjCHSW/mr63/QcXO9zLVxvJ6Oy13nio03rxpSnVDDjFor75SjVeZWPW/A==",
       "dev": true,
       "optional": true,
+      "peer": true,
       "dependencies": {
         "prr": "~1.0.1"
       },
@@ -25778,6 +25781,7 @@
       "integrity": "sha1-Cd/Uq50g4p6xw+gLiZA3jfnjy5w=",
       "dev": true,
       "optional": true,
+      "peer": true,
       "bin": {
         "image-size": "bin/image-size.js"
       },
@@ -26767,7 +26771,9 @@
       "version": "3.14.1",
       "resolved": "https://registry.npmjs.org/is-what/-/is-what-3.14.1.tgz",
       "integrity": "sha512-sNxgpk9793nzSs7bA6JQJGeIuRBQhAaNGG77kzYQgMkrID+lS6SlK07K5LaptscDlSaIgH+GPFzf+d75FVxozA==",
-      "dev": true
+      "dev": true,
+      "optional": true,
+      "peer": true
     },
     "node_modules/is-windows": {
       "version": "1.0.2",
@@ -28128,6 +28134,8 @@
       "resolved": "https://registry.npmjs.org/less/-/less-3.13.1.tgz",
       "integrity": "sha512-SwA1aQXGUvp+P5XdZslUOhhLnClSLIjWvJhmd+Vgib5BFIr9lMNlQwmwUNOjXThF/A0x+MCYYPeWEfeWiLRnTw==",
       "dev": true,
+      "optional": true,
+      "peer": true,
       "dependencies": {
         "copy-anything": "^2.0.1",
         "tslib": "^1.10.0"
@@ -28148,29 +28156,13 @@
         "source-map": "~0.6.0"
       }
     },
-    "node_modules/less-loader": {
-      "version": "11.1.3",
-      "resolved": "https://registry.npmjs.org/less-loader/-/less-loader-11.1.3.tgz",
-      "integrity": "sha512-A5b7O8dH9xpxvkosNrP0dFp2i/dISOJa9WwGF3WJflfqIERE2ybxh1BFDj5CovC2+jCE4M354mk90hN6ziXlVw==",
-      "dev": true,
-      "engines": {
-        "node": ">= 14.15.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/webpack"
-      },
-      "peerDependencies": {
-        "less": "^3.5.0 || ^4.0.0",
-        "webpack": "^5.0.0"
-      }
-    },
     "node_modules/less/node_modules/mime": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
       "integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==",
       "dev": true,
       "optional": true,
+      "peer": true,
       "bin": {
         "mime": "cli.js"
       },
@@ -28182,7 +28174,9 @@
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
-      "dev": true
+      "dev": true,
+      "optional": true,
+      "peer": true
     },
     "node_modules/leven": {
       "version": "3.1.0",
@@ -30627,7 +30621,8 @@
       "resolved": "https://registry.npmjs.org/native-request/-/native-request-1.1.0.tgz",
       "integrity": "sha512-uZ5rQaeRn15XmpgE0xoPL8YWqcX90VtCFglYwAgkvKM5e8fog+vePLAhHxuuv/gRkrQxIeh5U3q9sMNUrENqWw==",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "peer": true
     },
     "node_modules/natural-compare": {
       "version": "1.4.0",
@@ -34307,7 +34302,8 @@
       "resolved": "https://registry.npmjs.org/prr/-/prr-1.0.1.tgz",
       "integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY=",
       "dev": true,
-      "optional": true
+      "optional": true,
+      "peer": true
     },
     "node_modules/pseudomap": {
       "version": "1.0.2",
@@ -45257,8 +45253,6 @@
         "jscodeshift": "^17.0.0",
         "jsdom": "^19.0.0",
         "jsdom-global": "^3.0.2",
-        "less": "^3.13.1",
-        "less-loader": "^11.1.3",
         "match-sorter": "^6.2.0",
         "mathjax": "^3.2.2",
         "mensch": "^0.3.4",