[Rewards] Modified adaptive captcha error message style.

Fixes brave/brave-browser#18971

Changed:
 * the button to grow vertically with the text
 * the header to align with the sad face image when the text exceeds 1
   line
 * the sad face image to center vertically with the header.

The localization change has been made in Transifex, but is also being
applied here preemptively.

Author: mkarolin

components/brave_rewards/resources/adaptive_captcha/components/adaptive_captcha_view.style.ts

@@ -24,6 +24,7 @@ export const root = styled.div`
 `
 
 export const title = styled.div`
+  display: flex;
   margin-top: 16px;
   font-weight: 600;
   font-size: 22px;
@@ -34,7 +35,8 @@ export const title = styled.div`
     height: 24px;
     margin-right: 8px;
     vertical-align: middle;
-    margin-bottom: 3px;
+    margin-top: auto;
+    margin-bottom: auto;
   }
 
   &.long {
@@ -77,7 +79,7 @@ export const helpAction = styled.div`
 
   button {
     display: block;
-    height: 40px;
+    height: auto;
     margin: 0 auto;
     padding: 10px 22px;
     font-weight: 600;

components/brave_rewards/resources/extension/brave_rewards/_locales/pl/messages.json

@@ -607,7 +607,7 @@
     "description": ""
   },
   "captchaContactSupport": {
-    "message": "Skontaktuj się z działem pomocy technicznej!",
+    "message": "Skontaktuj się z pomocą techniczną",
     "description": ""
   },
   "captchaDismiss": {