sveltekit: Fix prototype due to external package changes (#57587)

Because the prototype (intentionally) isn't "verified" when changes to other packages
are made, it's possible that it breaks when code in other packages
changes.

This commit brings the prototype up-to-date. The `singleLine` extension
was recently refactored and the `applyOnEnter` option was removed.

Author: fkling

client/web-sveltekit/src/lib/branded.ts

@@ -4,7 +4,8 @@ export {
     basicSyntaxColumns,
     exampleQueryColumns,
 } from '@sourcegraph/branded/src/search-ui/components/QueryExamples.constants'
-export { createDefaultSuggestions, singleLine } from '@sourcegraph/branded/src/search-ui/input/codemirror'
+export { createDefaultSuggestions } from '@sourcegraph/branded/src/search-ui/input/codemirror'
+export { multiline } from '@sourcegraph/branded/src/search-ui/input/codemirror/multiline'
 export { parseInputAsQuery } from '@sourcegraph/branded/src/search-ui/input/codemirror/parsedQuery'
 export { querySyntaxHighlighting } from '@sourcegraph/branded/src/search-ui/input/codemirror/syntax-highlighting'
 export { decorateQuery } from '@sourcegraph/branded/src/search-ui/util/query'

client/web-sveltekit/src/lib/search/CodeMirrorQueryInput.svelte

@@ -7,7 +7,7 @@
 
     import { browser } from '$app/environment'
     import { goto } from '$app/navigation'
-    import { createDefaultSuggestions, singleLine, parseInputAsQuery, querySyntaxHighlighting } from '$lib/branded'
+    import { createDefaultSuggestions, multiline, parseInputAsQuery, querySyntaxHighlighting } from '$lib/branded'
     import type { SearchPatternType } from '$lib/graphql-operations'
     import { fetchStreamSuggestions, QueryChangeSource, type QueryState } from '$lib/shared'
 
@@ -46,7 +46,6 @@
                 fetchSuggestions: query => fetchStreamSuggestions(query),
                 isSourcegraphDotCom: false,
                 navigate: url => goto(url.toString()),
-                applyOnEnter: true,
             }),
         ]
 
@@ -84,7 +83,7 @@
                     },
                 ])
             ),
-            singleLine,
+            multiline(false),
             EditorView.updateListener.of(update => {
                 const { state } = update
                 if (update.docChanged) {