Adopt codicons in simple find widget (ref #86708)

src/vs/workbench/contrib/codeEditor/browser/find/images/chevron-next-dark.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M3.14646 9.76783L8.14644 14.7678L8.85355 14.7678L13.8535 9.76783L13.1464 9.06072L9 13.2072L9 1.00006L8 1.00006L8 13.2072L3.85356 9.06072L3.14646 9.76783Z" fill="#C5C5C5"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/images/chevron-next-light.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M3.14646 9.76783L8.14644 14.7678L8.85355 14.7678L13.8535 9.76783L13.1464 9.06072L9 13.2072L9 1.00006L8 1.00006L8 13.2072L3.85356 9.06072L3.14646 9.76783Z" fill="#424242"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/images/chevron-previous-dark.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M13.8535 6.29284L8.85356 1.29285H8.14645L3.14645 6.29284L3.85356 6.99995L8 2.85351V15.0606H9V2.85351L13.1464 6.99995L13.8535 6.29284Z" fill="#C5C5C5"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/images/chevron-previous-light.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M13.8535 6.29284L8.85356 1.29285H8.14645L3.14645 6.29284L3.85356 6.99995L8 2.85351V15.0606H9V2.85351L13.1464 6.99995L13.8535 6.29284Z" fill="#424242"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/images/close-dark.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M8 8.70714L11.6464 12.3536L12.3536 11.6465L8.70711 8.00004L12.3536 4.35359L11.6464 3.64648L8 7.29293L4.35355 3.64648L3.64645 4.35359L7.29289 8.00004L3.64645 11.6465L4.35355 12.3536L8 8.70714Z" fill="#C5C5C5"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/images/close-light.svg

-<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M8 8.70714L11.6464 12.3536L12.3536 11.6465L8.70711 8.00004L12.3536 4.35359L11.6464 3.64648L8 7.29293L4.35355 3.64648L3.64645 4.35359L7.29289 8.00004L3.64645 11.6465L4.35355 12.3536L8 8.70714Z" fill="#424242"/>
-</svg>

src/vs/workbench/contrib/codeEditor/browser/find/simpleFindWidget.css

@@ -43,42 +43,17 @@
 	min-width: 20px;
 	width: 20px;
 	height: 20px;
+	line-height: 20px;
 	display: flex;
 	flex: initial;
+	justify-content: center;
 	margin-left: 3px;
 	background-position: center center;
 	background-repeat: no-repeat;
 	cursor: pointer;
 }
 
-.monaco-workbench .simple-find-part .button.previous {
-	background-image: url('images/chevron-previous-light.svg');
-}
-
-.monaco-workbench .simple-find-part .button.next {
-	background-image: url('images/chevron-next-light.svg');
-}
-
-.monaco-workbench .simple-find-part .button.close-fw {
-	background-image: url('images/close-light.svg');
-}
-
-.hc-black .monaco-workbench .simple-find-part .button.previous,
-.vs-dark .monaco-workbench .simple-find-part .button.previous {
-	background-image: url('images/chevron-previous-dark.svg');
-}
-
-.hc-black .monaco-workbench .simple-find-part .button.next,
-.vs-dark .monaco-workbench .simple-find-part .button.next {
-	background-image: url('images/chevron-next-dark.svg');
-}
-
-.hc-black .monaco-workbench .simple-find-part .button.close-fw,
-.vs-dark .monaco-workbench .simple-find-part .button.close-fw {
-	background-image: url('images/close-dark.svg');
-}
-
 .monaco-workbench .simple-find-part .button.disabled {
 	opacity: 0.3;
 	cursor: default;
-}
\ No newline at end of file
+}

src/vs/workbench/contrib/codeEditor/browser/find/simpleFindWidget.ts

@@ -94,7 +94,7 @@ export abstract class SimpleFindWidget extends Widget {
 
 		this.prevBtn = this._register(new SimpleButton({
 			label: NLS_PREVIOUS_MATCH_BTN_LABEL,
-			className: 'previous',
+			className: 'codicon codicon-arrow-up',
 			onTrigger: () => {
 				this.find(true);
 			}
@@ -102,7 +102,7 @@ export abstract class SimpleFindWidget extends Widget {
 
 		this.nextBtn = this._register(new SimpleButton({
 			label: NLS_NEXT_MATCH_BTN_LABEL,
-			className: 'next',
+			className: 'codicon codicon-arrow-down',
 			onTrigger: () => {
 				this.find(false);
 			}
@@ -110,7 +110,7 @@ export abstract class SimpleFindWidget extends Widget {
 
 		const closeBtn = this._register(new SimpleButton({
 			label: NLS_CLOSE_BTN_LABEL,
-			className: 'close-fw',
+			className: 'codicon codicon-close',
 			onTrigger: () => {
 				this.hide();
 			}