Rollup merge of rust-lang#124725 - fmease:enable-triagebot-transfer, r=jackh726

Meta: Enable the brand new triagebot transfer command

cc rust-lang/triagebot#1780, rust-lang/rust-forge#741, https://github.com/rust-lang/rust/issues/124619#issuecomment-2094258528
cc `@ehuss,` `@jackh726`

Author: fmease

triagebot.toml

@@ -1057,3 +1057,7 @@ project-exploit-mitigations = [
 # Enable tracking of PR review assignment
 # Documentation at: https://forge.rust-lang.org/triagebot/pr-assignment-tracking.html
 [pr-tracking]
+
+# Enable issue transfers within the org
+# Documentation at: https://forge.rust-lang.org/triagebot/transfer.html
+[transfer]