[Synthetics] Unskip and fix Synthetics global params e2e tests (#192400)

## Summary

Goal is to unskip the test suite for global params in Synthetics e2e.

(cherry picked from commit f15e825)

x-pack/plugins/observability_solution/synthetics/e2e/synthetics/journeys/global_parameters.journey.ts

@@ -59,7 +59,7 @@ journey(`GlobalParameters`, async ({ page, params }) => {
     await page.click('[placeholder="Search..."]');
     await page.fill('[placeholder="Search..."]', 'username');
     await page.click('text=username');
-    await page.click('[aria-label="Clear input"]');
+    await page.click('[aria-label="Clear search input"]');
     await page.click('[placeholder="Search..."]');
     await page.fill('[placeholder="Search..."]', 'website');
     await page.click('text=website username');
@@ -69,7 +69,7 @@ journey(`GlobalParameters`, async ({ page, params }) => {
     await page.fill('[placeholder="Search..."]', 'extra');
     await page.keyboard.press('Enter');
     await page.click('text=No items found');
-    await page.click('[aria-label="Clear input"]');
+    await page.click('[aria-label="Clear search input"]');
   });
 
   step('Click text=Delete ParameterEdit Parameter >> :nth-match(button, 2)', async () => {
@@ -86,7 +86,7 @@ journey(`GlobalParameters`, async ({ page, params }) => {
     await page.click('text=staging');
     await page.click('button:has-text("Tags")');
     await page.click('[aria-label="Tags"] >> text=staging');
-    await page.click('[aria-label="Clear input"]');
+    await page.click('[aria-label="Clear search input"]');
   });
   step('Click text=Delete ParameterEdit Parameter >> button', async () => {
     await page.click('text=Delete ParameterEdit Parameter >> button');