Refactor static admin form

[cakecatz]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

NONE

[nghialv]

/approve

[pipecd-bot]

This pull request is APPROVED by nghialv.

Approvers can cancel the approval by writing /approve cancel in a comment. Any additional commits also will change this pull request to be not-approved.

[pipecd-bot]

Code coverage for golang is 32.94%. This pull request does not change code coverage.

[pipecd-bot]

Code coverage for javascript is 84.17%. This pull request increases coverage by 1.25%.

File	Base	Head	Diff
src/components/project-setting-labeled-text.tsx	--	100.00%	+100.00%
src/components/static-admin-form.tsx	--	93.02%	+93.02%
src/constants/text.ts	--	100.00%	+100.00%
src/constants/toast-text.ts	--	100.00%	+100.00%
src/mocks/services/project.ts	--	100.00%	+100.00%
src/styles/project-setting.ts	--	100.00%	+100.00%
src/api/project.ts	25.00%	41.67%	+16.67%
src/mocks/handlers.ts	100.00%	100.00%	+0.00%
src/modules/project.ts	58.33%	69.44%	+11.11%