test(logs): heal Bug 9724 JSON-tab-default flake with retrying data-state assertion (#13407)

## What

Heals the flaky **Logs-Regression** spec `Log detail sidebar opens with
JSON tab by default (Bug #9724)`, which failed the scheduled main
regression run
[29990712453](https://github.com/openobserve/openobserve/actions/runs/29990712453)
(and its re-run) on all retries.

## Root cause

`logsPage.verifyJsonTabSelectedByDefault()` read the Reka `OTab`
(`TabsTrigger`) `data-state` attribute with a **one-shot** `.evaluate(el
=> el.getAttribute('data-state') === 'active')`. `DetailTable.vue` is
loaded via `defineAsyncComponent`, and its tabs moved to Reka UI in the
design-token migration (13173). On drawer open, the trigger can render a
tick before Reka's reactive `data-state` settles to `active`. A raw
`getAttribute` read does **not** auto-retry, so under CI load it
captured the pre-settle value and failed.

JSON **is** the genuine product default (`DetailTable.vue` `tab =
ref(initialTab || "json")`, `SearchResult.vue` `detailTableInitialTab =
"json"`) — this is a load flake, not a product regression.

## Fix

Replace the one-shot reads with the auto-retrying
`expect(tab).toHaveAttribute('data-state', 'active', { timeout: 10000
})` pattern already used elsewhere in the same page object
(regex-pattern / builder-type toggles), across all three tab-verify
helpers:

- `verifyJsonTabSelectedByDefault()`
- `verifyTableTabSelected()`
- `verifyJsonTabSelected()`

Test-only change; no product code touched.

## Verification

Local run against `localhost:5080`:

```
npx playwright test playwright-tests/RegressionSet/Logs/logs-regression.spec.js \
  -g "Bug #9724" --project=chromium --repeat-each=3
# 3 passed (16.9s)
```

The single spec exercises all three healed helpers (default-JSON at
steps 3 + reopen, Table tab at step 6, JSON switch-back at step 7).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

tests/ui-testing/pages/logsPages/logsPage.js

@@ -3405,9 +3405,13 @@ export class LogsPage {
         const jsonTab = this.page.locator(this.logDetailJsonTab);
         await expect(jsonTab).toBeVisible();
 
-        // Check if JSON tab is selected (has data-state="active" for Reka OTab)
-        const isJsonTabActive = await jsonTab.evaluate(el => el.getAttribute('data-state') === 'active');
-        expect(isJsonTabActive, 'JSON tab should be selected by default (Bug #9724)').toBe(true);
+        // The Reka OTab (TabsTrigger) carries data-state="active" when selected. The
+        // DetailTable drawer is an async component, so on open the trigger can render a
+        // tick before Reka's reactive data-state settles to "active". A one-shot
+        // getAttribute read does NOT retry and flakes under CI load, so poll with
+        // toHaveAttribute, which auto-retries until the attribute settles (Bug #9724).
+        await expect(jsonTab, 'JSON tab should be selected by default (Bug #9724)')
+            .toHaveAttribute('data-state', 'active', { timeout: 10000 });
 
         // Verify JSON content is visible
         await expect(this.page.locator(this.logDetailJsonContent)).toBeVisible();
@@ -3452,8 +3456,10 @@ export class LogsPage {
      */
     async verifyTableTabSelected() {
         const tableTab = this.page.locator(this.logDetailTableTab);
-        const isTableTabActive = await tableTab.evaluate(el => el.getAttribute('data-state') === 'active');
-        expect(isTableTabActive, 'Table tab should be selected').toBe(true);
+        // Poll data-state via toHaveAttribute (auto-retries) rather than a one-shot
+        // getAttribute read, so the Reka tab-switch reactive update can settle under CI load.
+        await expect(tableTab, 'Table tab should be selected')
+            .toHaveAttribute('data-state', 'active', { timeout: 10000 });
         await expect(this.page.locator(this.logDetailTableContent)).toBeVisible();
         testLogger.info('✓ Table tab is selected and content is visible');
     }
@@ -3464,8 +3470,10 @@ export class LogsPage {
      */
     async verifyJsonTabSelected() {
         const jsonTab = this.page.locator(this.logDetailJsonTab);
-        const isJsonTabActive = await jsonTab.evaluate(el => el.getAttribute('data-state') === 'active');
-        expect(isJsonTabActive, 'JSON tab should be selected').toBe(true);
+        // Poll data-state via toHaveAttribute (auto-retries) rather than a one-shot
+        // getAttribute read, so the Reka tab-switch reactive update can settle under CI load.
+        await expect(jsonTab, 'JSON tab should be selected')
+            .toHaveAttribute('data-state', 'active', { timeout: 10000 });
         await expect(this.page.locator(this.logDetailJsonContent)).toBeVisible();
         testLogger.info('✓ JSON tab is selected and content is visible');
     }