chore: rewrite user-facing JS messages in Support module

Conservative cleanup of frappe.throw/msgprint messages per the message style
guide; meaning, severity, and .format() arguments are unchanged:

- index bare {} placeholders as {0}/{1}/... so translators can reorder
- move f-strings / .format() / concatenation out of _() (they break gettext
  extraction and never translate)
- wrap translatable dynamic values (DocType/Select labels) in _()
- fix grammar and colloquialisms
- drop no-op _() wrapping runtime-built strings

Part of #53976.

erpnext/support/doctype/issue/issue.js

@@ -123,7 +123,9 @@ frappe.ui.form.on("Issue", {
 								},
 								(r) => {
 									frappe.msgprint(
-										`New issue created: <a href="/app/issue/${r.message}">${r.message}</a>`
+										__("New issue created: {0}", [
+											`<a href="/app/issue/${r.message}">${r.message}</a>`,
+										])
 									);
 									frm.reload_doc();
 									dialog.hide();