[docs] cherry-pick Cp10 2.5.1 (#36280)

* [Data] [Docs] Ray Data doc changes for 2.5 (#36224)

#35749
#35751
#35753
#35755
#35757
#36018
#36105
#36121
#36144
#36145
#36162
#36124

---------

Signed-off-by: Balaji Veeramani <balaji@anyscale.com>
Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
Signed-off-by: amogkam <amogkamsetty@yahoo.com>
Signed-off-by: Amog Kamsetty <amogkam@users.noreply.github.com>
Co-authored-by: Balaji Veeramani <balaji@anyscale.com>
Co-authored-by: angelinalg <122562471+angelinalg@users.noreply.github.com>
Co-authored-by: Hao Chen <chenh1024@gmail.com>

* [docs] relax kapa loading scheme (#36201)

Signed-off-by: Max Pumperla <max.pumperla@googlemail.com>

* Revert "[Data] [Docs] Ray Data doc changes for 2.5 (#36224)"

This reverts commit 48a6c26.

---------

Signed-off-by: Balaji Veeramani <balaji@anyscale.com>
Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
Signed-off-by: amogkam <amogkamsetty@yahoo.com>
Signed-off-by: Amog Kamsetty <amogkam@users.noreply.github.com>
Signed-off-by: Max Pumperla <max.pumperla@googlemail.com>
Co-authored-by: Amog Kamsetty <amogkam@users.noreply.github.com>
Co-authored-by: Balaji Veeramani <balaji@anyscale.com>
Co-authored-by: Hao Chen <chenh1024@gmail.com>
Co-authored-by: Max Pumperla <max.pumperla@googlemail.com>

doc/source/_static/js/custom.js

@@ -136,27 +136,28 @@ function checkForElement() {
 
 window.addEventListener("load", function(){
 
-    let targetElement = null;
-    while (targetElement == null) {
-        targetElement = checkForElement();
-    }
-    console.log(targetElement);
-
-    let observer = new MutationObserver(
-        function(mutationsList, observer) {
-      // Handle the changes in the element
-      mutationsList.forEach(function(mutation) {
-        // Code to handle the specific type of mutation, like "childList" additions
-        console.log('Element changed:', mutation);
-        let inputElement = document.getElementsByClassName("mantine-TextInput-input")[0];
-        inputElement.placeholder = "Do not include any personal data or confidential information";
-        let main = document.getElementsByClassName("mantine-Text-root")[1];
-        main.textContent = "Ray Docs AI - Ask a question"
-        let left = document.getElementsByClassName("mantine-Text-root")[2];
-        left.textContent = "results are automated & may be incorrect or contain inappropriate information"
-      });
-    });
+    let targetElement = checkForElement();
+
+    try {
+        let observer = new MutationObserver(
+            function (mutationsList, observer) {
+                // Handle the changes in the element
+                mutationsList.forEach(function (mutation) {
+                    // Code to handle the specific type of mutation, like "childList" additions
+                    console.log('Element changed:', mutation);
+                    let inputElement = document.getElementsByClassName("mantine-TextInput-input")[0];
+                    inputElement.placeholder = "Do not include any personal data or confidential information";
+                    let main = document.getElementsByClassName("mantine-Text-root")[1];
+                    main.textContent = "Ray Docs AI - Ask a question"
+                    let left = document.getElementsByClassName("mantine-Text-root")[2];
+                    left.textContent = "results are automated & may be incorrect or contain inappropriate information"
+                });
+            });
 
-    let observerConfig = { childList: true };
-    observer.observe(targetElement, observerConfig);
+        let observerConfig = {childList: true};
+        observer.observe(targetElement, observerConfig);
+    } catch (e) {
+        console.log("could not load kapa widget.");
+        console.log(e);
+    }
 });