Remove a tiny PromptInput batch of unused React imports (#323)

This seventh pass continues issue #314 with a two-file PromptInput micro-batch. Both files shared the same single-warning pattern for an unused React import, so the cleanup stays extremely small, behavior-neutral, and easy to review.

Constraint: Keep pass 7 to the exact two-file PromptInput pair with the same warning shape
Rejected: Fold in broader PromptInput cleanup or unrelated warnings | would expand scope beyond a simple micro-pass
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Continue harvesting paired file/test micro-batches when the compiler output exposes them cleanly
Tested: bun run build; bun run smoke; targeted noUnused grep for touched files via bun x tsc --noEmit --noUnusedLocals --noUnusedParameters --pretty false
Not-tested: full repo typecheck (broader baseline noise remains outside this pass)

Co-authored-by: anandh8x <test@example.com>

src/components/PromptInput/PromptInputFooterSuggestions.test.tsx

@@ -1,5 +1,4 @@
 import figures from 'figures'
-import React from 'react'
 import { describe, expect, it } from 'bun:test'
 import { renderToString } from '../../utils/staticRender.js'
 import {

src/components/PromptInput/PromptInputFooterSuggestions.tsx

@@ -1,5 +1,4 @@
 import figures from 'figures'
-import * as React from 'react'
 import { memo, type ReactNode } from 'react'
 import { useTerminalSize } from '../../hooks/useTerminalSize.js'
 import { stringWidth } from '../../ink/stringWidth.js'