fix(DT-4269): namespace selector tooltip overflow (#3676)

* Forward portalOffset through tooltip

* use a portal with a portal offset on combobox action tooltip link

Author: tegan-temporal

src/lib/holocene/combobox/combobox.svelte

@@ -587,7 +587,12 @@
       {:else if href}
         <div class="ml-1 flex h-full items-center border-l border-subtle p-0.5">
           {#if actionTooltip}
-            <Tooltip text={actionTooltip} right>
+            <Tooltip
+              text={actionTooltip}
+              right
+              usePortal
+              portalOffset={{ x: 6 }}
+            >
               <Button
                 variant="ghost"
                 size="xs"

src/lib/holocene/tooltip.svelte

@@ -5,7 +5,10 @@
   import type { IconName } from '$lib/holocene/icon';
   import Icon from '$lib/holocene/icon/icon.svelte';
   import Portal from '$lib/holocene/portal/portal.svelte';
-  import type { PortalPosition } from '$lib/holocene/portal/types';
+  import type {
+    PortalOffset,
+    PortalPosition,
+  } from '$lib/holocene/portal/types';
   import type { Only } from '$lib/types/global';
 
   const HOVER_HIDE_DELAY_MS = 120;
@@ -19,6 +22,7 @@
     tooltipClass?: string;
     show?: boolean;
     usePortal?: boolean;
+    portalOffset?: PortalOffset;
     scrollContainer?: string;
   };
 
@@ -79,6 +83,7 @@
   export let tooltipClass = '';
   export let show = false;
   export let usePortal = false;
+  export let portalOffset: PortalOffset | undefined = undefined;
   export let scrollContainer: string | undefined = undefined;
 
   let wrapperElement: HTMLElement | null = null;
@@ -166,6 +171,7 @@
 
     {#if usePortal && wrapperElement}
       <Portal
+        offset={portalOffset}
         anchor={wrapperElement}
         open={isOpen}
         position={portalPosition}