fix: updated node toolbar to be more stable on zoom, fix success and error component tooltips, unselect nodes on flow opening (#4610)

* Unselect nodes and edges on enter

* Start with viewport fit

* Fix run component tooltip to match error and success

* Update scrollbar design

* Added node toolbar without portal to match the width of the node

* Updated color of scrollbar

* Updated NoteNode to have same behavior as GenericNode

* Updated logic for tests to pass

* Fix fitview to only occur when nodes are present

* Update z index of resize handle

* Sticky notes test fix

* [autofix.ci] apply automated fixes

* freeze test fixed

---------

Co-authored-by: Mike Fortman <michael.fortman@datastax.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: anovazzi1 <otavio2204@gmail.com>
Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>
Co-authored-by: Cristhian Zanforlin Lousa <cristhian.lousa@gmail.com>

src/frontend/tailwind.config.mjs

@@ -353,7 +353,7 @@ const config = {
             borderRadius: "999px",
           },
           "&::-webkit-scrollbar-thumb:hover": {
-            backgroundColor: "hsl(var(--ring))",
+            backgroundColor: "hsl(var(--placeholder-foreground))",
           },
           cursor: "auto",
         },