fix(web): resolve testTag through data-testid or id

Compose Multiplatform emits its testTag into the element id, which the native
table already accepts via the resource-id alias. The two web selector tables
were the only place that rejected it.

Claude-Session: https://claude.ai/code/session_01Fj4wJUikdABuMQEETwW55J

internal/driver/chrome/translate.go

@@ -42,7 +42,13 @@ func TranslateStringSelector(selector string) (string, bool, error) {
 		return `[aria-label="` + cssEscape(value) + `"]`, false, nil
 	case "descPrefix":
 		return `[aria-label^="` + cssEscape(value) + `"]`, false, nil
-	case "testTag", "testID", "testid", "data-testid":
+	case "testTag":
+		// Mirrors the in-page table and the native resource-id alias: a
+		// testTag reaches the DOM as data-testid or as an id, depending on
+		// the toolkit. `:is()` keeps this one compound selector.
+		escaped := cssEscape(value)
+		return `:is([data-testid="` + escaped + `"], [id="` + escaped + `"])`, false, nil
+	case "testID", "testid", "data-testid":
 		return `[data-testid="` + cssEscape(value) + `"]`, false, nil
 	case "placeholder", "placeholderValue", "hintText":
 		return `[placeholder="` + cssEscape(value) + `"]`, false, nil

internal/driver/chrome/translate_test.go

@@ -21,7 +21,7 @@ func TestTranslateStringSelector_KnownKeys(t *testing.T) {
 		{"accessibilityLabel:logout", `[aria-label="logout"]`, false},
 		{"aria-label:Sign in", `[aria-label="Sign in"]`, false},
 		{"descPrefix:account:", `[aria-label^="account:"]`, false},
-		{"testTag:submit", `[data-testid="submit"]`, false},
+		{"testTag:submit", `:is([data-testid="submit"], [id="submit"])`, false},
 		{"testID:submit", `[data-testid="submit"]`, false},
 		{"placeholder:Email", `[placeholder="Email"]`, false},
 	}