style: modify log highlight color (#56379)

* style: modify log highlight color

* style: modify code highlight color

(cherry picked from commit 235d6f8)

Author: RoyLee1224

airflow-core/src/airflow/ui/src/pages/Dag/Code/Code.tsx

@@ -156,7 +156,7 @@ export const Code = () => {
       <Box
         css={{
           "& *::selection": {
-            bg: "gray.emphasized",
+            bg: "blue.emphasized",
           },
         }}
         fontSize="14px"

airflow-core/src/airflow/ui/src/pages/TaskInstance/Logs/TaskLogContent.tsx

@@ -114,6 +114,11 @@ export const TaskLogContent = ({ error, isLoading, logError, parsedLogs, wrap }:
       <ErrorAlert error={error ?? logError} />
       <ProgressBar size="xs" visibility={isLoading ? "visible" : "hidden"} />
       <Code
+        css={{
+          "& *::selection": {
+            bg: "blue.emphasized",
+          },
+        }}
         data-testid="virtualized-list"
         flexGrow={1}
         h="auto"