Merge branch 'style/enable-multiline-block-chain-rubocop-cop' into 'master'

Enable Style/MultilineBlockChain rubocop style cop

Avoid multi-line chains of blocks.

See #17478.

See merge request !4349

.rubocop.yml

@@ -349,7 +349,7 @@ Style/MultilineArrayBraceLayout:
 
 # Avoid multi-line chains of blocks.
 Style/MultilineBlockChain:
-  Enabled: false
+  Enabled: true
 
 # Ensures newlines after multiline block do statements.
 Style/MultilineBlockLayout: