fix: Fix grpcWeb import in hub-web (#2006)

## Motivation

We accidentally lost the code that was fixing up bad protoc js file
generation for hub-web. Bring it back and fix compilation.

## Change Summary

Describe the changes being made in 1-2 concise sentences.

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[changeset](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#35-adding-changesets)
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## Additional Context

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<!-- start pr-codex -->

---

## PR-Codex overview
This PR updates the `hub-web` package to fix the `grpcWeb` import and
replaces `grpc` with `grpcWeb` in the codebase.

### Detailed summary
- Updated `hub-web` package to fix `grpcWeb` import
- Replaced `grpc` with `grpcWeb` in the codebase for consistency

> The following files were skipped due to too many changes:
`packages/hub-web/src/generated/rpc.ts`

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

<!-- end pr-codex -->

.changeset/tame-flowers-fry.md

@@ -0,0 +1,5 @@
+---
+"@farcaster/hub-web": patch
+---
+
+fix: grpcWeb import

package.json

@@ -9,7 +9,7 @@
     "build": "./node_modules/.bin/turbo run build",
     "clean": "./node_modules/.bin/turbo run clean",
     "dev": "./node_modules/.bin/turbo run dev --parallel",
-    "protoc": "cd packages/core && yarn protoc && cd ../hub-nodejs && yarn protoc && cd ../hub-web && yarn protoc",
+    "protoc": "cd packages/core && yarn protoc && cd ../hub-nodejs && yarn protoc && cd ../hub-web && yarn protoc && sed -i '' 's/{ grpc }/grpcWeb/g; s/grpc\\./grpcWeb.grpc./g' src/generated/rpc.ts",
     "test": "./node_modules/.bin/turbo run test",
     "test:ci": "./node_modules/.bin/turbo run test:ci -- --passWithNoTests",
     "lint": "./node_modules/.bin/turbo run lint --parallel",