custom template forget replace

### What is the problem?

`blitz generate all p2 name:string description:string? active:boolean`

for `src/app/p2s/components/NewP2.tsx`, function name is `New__ModelName`, should be `New_P2`

cc @siddhsuresh

### Paste all your error logs here:

```
export function New__ModelName() {
```

### Paste all relevant code snippets here:

```
PASTE_HERE (leave the ``` marks)
```

### What are detailed steps to reproduce this?

see abouve

### Run `blitz -v` and paste the output here:

```
Package manager: pnpm

System:
OS: macOS 14.5
CPU: (16) x64 Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
Memory: 19.70 MB / 32.00 GB
Shell: 3.7.1 - /usr/local/bin/fish
Binaries:
Node: 20.13.0 - /usr/local/bin/node
Yarn: 1.22.22 - ~/Library/pnpm/yarn
npm: 10.5.2 - /usr/local/bin/npm
npmPackages:
@blitzjs/auth: 2.0.10 => 2.0.10
@blitzjs/next: 2.0.10 => 2.0.10
@blitzjs/rpc: 2.0.10 => 2.0.10
@prisma/client: 5.4.2 => 5.4.2
blitz: 2.0.10 => 2.0.10
next: 14.2.4 => 14.2.4
prisma: 5.4.2 => 5.4.2
react: 18.2.0 => 18.2.0
react-dom: 18.2.0 => 18.2.0
typescript: 5.1 => 5.1.6
```

### Please include below any other applicable logs and screenshots that show your problem:

_No response_