add shape that missed filterChip property

[eunryong-hwang]

Connection with issue(s)

Close #???

Connected to #???

Solution description

Screenshots or Videos

To Do

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[codecov]

Codecov Report

Merging #1118 (8a2d25a) into main (9082e0e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1118   +/-   ##
=======================================
  Coverage   71.40%   71.40%           
=======================================
  Files          19       19           
  Lines         703      703           
=======================================
  Hits          502      502           
  Misses        201      201           

Impacted Files	Coverage Δ
lib/src/fields/form_builder_filter_chips.dart	87.50% <ø> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more