feat: add trailing icon for button (#4474)

* feat: add trailing icon for button

* chore: update remaining trailing icon props

* auto update snapshots (#4475)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* chore: update test

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: nmerget

__snapshots__/button/patternhub/button-properties-should-match-screenshot.png

@@ -15,7 +15,10 @@
   - link "Size"
   - button "(Default) Medium"
   - button "Small"
-  - link "Show Icon"
+  - link "Show Icon Leading"
+  - button "(Default) False"
+  - button "True"
+  - link "Show Icon Trailing"
   - button "(Default) False"
   - button "True"
   - link "No Text"

__snapshots__/button/showcase/chromium-highContrast/DBButton-should-match-screenshot-1/DBButton-should-match-screenshot.png

@@ -15,7 +15,10 @@
   - link "Size"
   - button "(Default) Medium"
   - button "Small"
-  - link "Show Icon"
+  - link "Show Icon Leading"
+  - button "(Default) False"
+  - button "True"
+  - link "Show Icon Trailing"
   - button "(Default) False"
   - button "True"
   - link "No Text"

__snapshots__/button/showcase/chromium-highContrast/should-have-same-aria-snapshot/DBButton-should-have-same-aria-snapshot.yaml

@@ -15,7 +15,10 @@
   - link "Size"
   - button "(Default) Medium"
   - button "Small"
-  - link "Show Icon"
+  - link "Show Icon Leading"
+  - button "(Default) False"
+  - button "True"
+  - link "Show Icon Trailing"
   - button "(Default) False"
   - button "True"
   - link "No Text"

__snapshots__/button/showcase/chromium/DBButton-should-match-screenshot-1/DBButton-should-match-screenshot.png

@@ -15,7 +15,10 @@
   - link "Size"
   - button "(Default) Medium"
   - button "Small"
-  - link "Show Icon"
+  - link "Show Icon Leading"
+  - button "(Default) False"
+  - button "True"
+  - link "Show Icon Trailing"
   - button "(Default) False"
   - button "True"
   - link "No Text"