Remove bundled ProximaNova font

src/content-feature.js

@@ -2,6 +2,12 @@ import { camelcase, matchHostname, processAttr } from './utils.js'
 import { immutableJSONPatch } from 'immutable-json-patch'
 import { PerformanceMonitor } from './performance.js'
 
+/**
+ * @typedef {object} AssetConfig
+ * @property {string} regularFontUrl
+ * @property {string} boldFontUrl
+ */
+
 export default class ContentFeature {
     constructor (featureName) {
         this.name = featureName
@@ -21,6 +27,13 @@ export default class ContentFeature {
         return this._platform
     }
 
+    /**
+     * @type {AssetConfig}
+     */
+    get assetConfig () {
+        return this._args?.assets || {}
+    }
+
     /**
      * Get the value of a config setting.
      * If the value is not set, return the default value.

src/features/click-to-load.js

@@ -1,6 +1,6 @@
 import { createCustomEvent, sendMessage, originalWindowDispatchEvent } from '../utils.js'
 import { logoImg, loadingImages, closeIcon } from './click-to-load/ctl-assets.js'
-import { styles, getConfig } from './click-to-load/ctl-config.js'
+import { getStyles, getConfig } from './click-to-load/ctl-config.js'
 import ContentFeature from '../content-feature.js'
 
 /**
@@ -22,6 +22,7 @@ const titleID = 'DuckDuckGoPrivacyEssentialsCTLElementTitle'
 // @see {getConfig}
 let config = null
 let sharedStrings = null
+let styles = null
 
 // TODO: Remove these redundant data structures and refactor the related code.
 //       There should be no need to have the entity configuration stored in two
@@ -893,10 +894,10 @@ function makeBaseStyleElement (mode = 'lightMode') {
  * Creates an anchor element with no destination. It is expected that a click
  * handler is added to the element later.
  * @param {string} linkText
- * @param {displayMode} [mode='lightMode']
+ * @param {displayMode} mode
  * @returns {HTMLAnchorElement}
  */
-function makeTextButton (linkText, mode) {
+function makeTextButton (linkText, mode = 'lightMode') {
     const linkElement = document.createElement('a')
     linkElement.style.cssText = styles.headerLink + styles[mode].linkFont
     linkElement.textContent = linkText
@@ -1620,6 +1621,8 @@ export default class ClickToLoad extends ContentFeature {
         const localizedConfig = getConfig(locale)
         config = localizedConfig.config
         sharedStrings = localizedConfig.sharedStrings
+        // update styles if asset config was sent
+        styles = getStyles(this.assetConfig)
 
         for (const entity of Object.keys(config)) {
             // Strip config entities that are first-party, or aren't enabled in the