add changelog entry

changelog_unreleased/handlebars/14067.md

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+#### Group params in opening block statements (#14067 by @jamescdavis)
+
+This is a follow-up to #13930 to establish wrapping consistency between opening block statements and else blocks by
+grouping params in opening blocks. This causes params to break to a new line together and not be split across lines
+unless the length of params exceeds the print width. This also updates the else block wrapping to behave exactly the
+same as opening blocks.
+
+<!-- prettier-ignore -->
+```hbs
+{{! Input }}
+{{#block param param param param param param param param param param as |blockParam|}}
+  Hello
+{{else block param param param param param param param param param param as |blockParam|}}
+  There
+{{/block}}
+
+{{! Prettier stable }}
+{{#block
+  param
+  param
+  param
+  param
+  param
+  param
+  param
+  param
+  param
+  param
+  as |blockParam|
+}}
+  Hello
+{{else block param
+param
+param
+param
+param
+param
+param
+param
+param
+param}}
+  There
+{{/block}}
+
+{{! Prettier main }}
+{{#block
+  param param param param param param param param param param
+  as |blockParam|
+}}
+  Hello
+{{else block
+  param param param param param param param param param param
+  as |blockParam|
+}}
+  There
+{{/block}}
+```