fix(amazonq): update "explore agents" button on hover #6170

## Problem
- explore page has some UI updates

## Solution
- improve the "Quick start" buttons on the explore agents page so that
it shows amazon q colours on hover

Author: jpinkney-aws

packages/amazonq/.changes/next-release/Bug Fix-bc24902f-4602-491e-9ad8-959eea73d20b.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Fix the quick start buttons on the explore page to show amazon q colours on hover"
+}

packages/core/src/amazonq/webview/ui/walkthrough/agent.ts

@@ -58,6 +58,7 @@ Implement features or make changes across your workspace, all from a single prom
                     status: 'main',
                     disabled: false,
                     flash: 'once',
+                    fillState: 'hover',
                     icon: MynahIcons.RIGHT_OPEN,
                     id: 'quick-start-featuredev',
                     text: `Quick start with **/dev**`,
@@ -88,6 +89,7 @@ Automatically generate unit tests for your active file.
                     status: 'main',
                     disabled: false,
                     flash: 'once',
+                    fillState: 'hover',
                     icon: MynahIcons.RIGHT_OPEN,
                     id: 'quick-start-testgen',
                     text: `Quick start with **/test**`,
@@ -122,6 +124,7 @@ Create and update READMEs for better documented code.
                     status: 'main',
                     disabled: false,
                     flash: 'once',
+                    fillState: 'hover',
                     icon: MynahIcons.RIGHT_OPEN,
                     id: 'quick-start-doc',
                     text: `Quick start with **/doc**`,
@@ -156,6 +159,7 @@ Review code for issues, then get suggestions to fix your code instantaneously.
                     status: 'main',
                     disabled: false,
                     flash: 'once',
+                    fillState: 'hover',
                     icon: MynahIcons.RIGHT_OPEN,
                     id: 'quick-start-review',
                     text: `Quick start with **/review**`,
@@ -186,6 +190,7 @@ Upgrade library and language versions in your codebase.
                     status: 'main',
                     disabled: false,
                     flash: 'once',
+                    fillState: 'hover',
                     icon: MynahIcons.RIGHT_OPEN,
                     id: 'quick-start-gumby',
                     text: `Quick start with **/transform**`,