chore(form-builder): use strict mode for transitional components

packages/@sanity/form-builder/src/transitional/IntentButton.tsx

@@ -1,8 +1,13 @@
-import React from 'react'
+import React, {ComponentProps} from 'react'
 import {Button} from '@sanity/ui'
 import {useRouter} from '../legacyParts'
 
-export function IntentButton(props) {
+export function IntentButton(
+  props: Omit<ComponentProps<typeof Button>, 'href'> & {
+    intent: string
+    params: Record<string, string>
+  }
+) {
   const router = useRouter()
 
   return <Button {...props} as="a" href={router.resolveIntentLink(props.intent, props.params)} />

packages/@sanity/form-builder/src/transitional/IntentLink.tsx

@@ -1,7 +1,9 @@
-import React from 'react'
+import React, {ComponentProps} from 'react'
 import {useRouter} from '../legacyParts'
 
-export function IntentLink(props) {
+export function IntentLink(
+  props: Omit<ComponentProps<'a'>, 'href'> & {intent: string; params: Record<string, string>}
+) {
   const router = useRouter()
 
   return <a {...props} href={router.resolveIntentLink(props.intent, props.params)} />

packages/@sanity/form-builder/src/transitional/tsconfig.json

@@ -0,0 +1,3 @@
+// this conditionally enables strict mode for everything in this folder
+// (Note: only applies to the typescript compiler service, not when using tsc for build)
+{"extends": "../../tsconfig.strict"}