Fix for hover issue on docs of discover/explorer data grid (opensearch-project#329)

Signed-off-by: Eric Wei <menwe@amazon.com>
(cherry picked from commit 19f29e1)

Author: mengweieric

public/components/event_analytics/explorer/events_views/data_grid.scss

@@ -1264,7 +1264,9 @@ export const Explorer = ({
       }}
     >
       <div
-        className={`dscAppContainer${uiSettingsService.get('theme:darkMode') && ' explorer-dark'}`}
+        className={`obsExplorer dscAppContainer${
+          uiSettingsService.get('theme:darkMode') && ' explorer-dark'
+        }`}
       >
         <Search
           key="search-component"

public/components/event_analytics/explorer/explorer.tsx

@@ -2,10 +2,10 @@
 
 exports[`<para_input /> spec renders the markdown component 1`] = `
 <div
-  class="sc-gKXOVf fPkmRS"
+  class="sc-gLDzan gebGCr"
 >
   <div
-    class="sc-bczRLJ hRTESd"
+    class="sc-beqWaB CSaoA"
   />
   <div
     style="width: 100%;"
@@ -52,10 +52,10 @@ exports[`<para_input /> spec renders the markdown component 1`] = `
 
 exports[`<para_input /> spec renders the visualization component 1`] = `
 <div
-  class="sc-gKXOVf fPkmRS"
+  class="sc-gLDzan gebGCr"
 >
   <div
-    class="sc-bczRLJ hRTESd"
+    class="sc-beqWaB CSaoA"
   />
   <div
     class="euiFlexGroup euiFlexGroup--gutterSmall euiFlexGroup--alignItemsFlexEnd euiFlexGroup--directionRow euiFlexGroup--responsive"

public/components/notebooks/components/paragraph_components/__tests__/__snapshots__/para_input.test.tsx.snap

@@ -19,7 +19,7 @@ exports[`<ParaOutput /> spec renders other types of outputs 1`] = `
   class="euiText euiText--medium"
 >
   <div
-    class="sc-crXcEl gqVnJo"
+    class="sc-csCMJt hFpeNP"
   />
 </div>
 `;

public/components/notebooks/components/paragraph_components/__tests__/__snapshots__/para_output.test.tsx.snap

@@ -79,10 +79,10 @@ exports[`<Paragraphs /> spec renders the component 1`] = `
         class="euiFormRow__fieldWrapper"
       >
         <div
-          class="sc-gKXOVf fPkmRS"
+          class="sc-gLDzan gebGCr"
         >
           <div
-            class="sc-bczRLJ hRTESd"
+            class="sc-beqWaB CSaoA"
           />
           <div
             style="width: 100%;"