[lldb-dap] improve symbol table style (llvm#155097)

* apply odd table rows color from vscode theme
* apply hover color from vscode theme

[Screencast From 2025-08-23
14-48-44.webm](https://github.com/user-attachments/assets/a738ac3c-3e56-4a57-b713-7430c614c415)

(cherry picked from commit 3cbbc07)

Author: eronnen

lldb/tools/lldb-dap/src-ts/ui/symbols-webview-html.ts

@@ -12,8 +12,13 @@ export function getSymbolsTableHTMLContent(tabulatorJsPath: vscode.Uri, tabulato
         color: var(--vscode-editor-foreground);
       }
 
+      .tabulator .tabulator-header {
+        background-color: var(--vscode-tree-tableOddRowsBackground);
+        color: var(--vscode-editor-foreground);
+      }
+
       .tabulator .tabulator-header .tabulator-col {
-        background-color: var(--vscode-editor-background);
+        background-color: var(--vscode-tree-tableOddRowsBackground);
         color: var(--vscode-editor-foreground);
       }
 
@@ -23,11 +28,22 @@ export function getSymbolsTableHTMLContent(tabulatorJsPath: vscode.Uri, tabulato
       }
 
       .tabulator-row.tabulator-row-even {
+        background-color: var(--vscode-tree-tableOddRowsBackground);
+      }
+
+      @media (hover:hover) and (pointer:fine){
+        .tabulator-row:hover {
+          background-color: var(--vscode-list-hoverBackground);
+          color: var(--vscode-list-hoverForeground);
+        }
+      }
+
+      .tabulator-row.tabulator-selected {
         background-color: var(--vscode-editor-background);
         color: var(--vscode-editor-foreground);
       }
 
-      .tabulator-row.tabulator-selected {
+      .tabulator .tabulator-tableholder .tabulator-table {
         background-color: var(--vscode-editor-background);
         color: var(--vscode-editor-foreground);
       }

lldb/tools/lldb-dap/src-ts/webview/symbols-table-view.ts

@@ -95,6 +95,7 @@ const SYMBOLS_TABLE = new Tabulator("#symbols-table", {
   height: "100vh",
   columns: SYMBOL_TABLE_COLUMNS,
   layout: "fitColumns",
+  selectableRows: false,
   data: previousState?.symbols || [],
 });