[ELI5] Tweak wording on the signup screen (#7136)

* Tweak signup wordings

* Update translations

src/locale/locales/ga/messages.po

@@ -3508,7 +3508,7 @@ msgstr "Cuir isteach do phasfhocal"
 #~ msgstr "Cuir isteach an soláthraí óstála is fearr leat"
 
 #: src/screens/Signup/StepHandle.tsx:114
-msgid "Input your user handle"
+msgid "Type your desired username"
 msgstr "Cuir isteach do leasainm"
 
 #: src/view/com/composer/threadgate/ThreadgateBtn.tsx:49
@@ -8542,7 +8542,7 @@ msgid "Your following feed is empty! Follow more users to see what's happening."
 msgstr "Tá an fotha de na daoine a leanann tú folamh! Lean tuilleadh úsáideoirí le feiceáil céard atá ar siúl."
 
 #: src/screens/Signup/StepHandle.tsx:125
-msgid "Your full handle will be"
+msgid "Your full username will be"
 msgstr "Do leasainm iomlán anseo:"
 
 #: src/screens/Settings/components/ChangeHandleDialog.tsx:219
@@ -8586,5 +8586,5 @@ msgid "Your report will be sent to the Bluesky Moderation Service"
 msgstr "Seolfar do thuairisc go dtí Seirbhís Modhnóireachta Bluesky"
 
 #: src/screens/Signup/index.tsx:142
-msgid "Your user handle"
+msgid "Choose your username"
 msgstr "Do leasainm"