Refactor welcome modal and sections to use translation context

- Replaced variable-based message retrieval with translation context in Welcome.jsx, Final.jsx, ImportSettings.jsx, Intro.jsx, PrivacyOptions.jsx, StyleSelection.jsx, and ThemeSelection.jsx components.
- Updated button texts and section titles to utilize the new translation method for better localization support.
- Cleaned up unused imports and improved code readability by removing unnecessary else statements in deepLinking.js and load.js.
- Ensured all localization files end with a newline for consistency.

src/features/search/Search.jsx

@@ -119,7 +119,11 @@ function Search() {
         <form onSubmit={searchButton} className="searchBar">
           <div className={classList}>
             <Tooltip title={t('widgets.search')}>
-              <button className="navbarButton" onClick={searchButton} aria-label={t('common.search_label')}>
+              <button
+                className="navbarButton"
+                onClick={searchButton}
+                aria-label={t('common.search_label')}
+              >
                 <MdSearch />
               </button>
             </Tooltip>