[BUG] panic for fmt.Fprintf

[dirac-lee]

Here is a bug.

In render.go:244, fmt.Fprintf will panic if buf's cap is not enough. Maybe you can consider use buf.WriteString() in stead, so that it's cap can grow if needed.

runtime error: makeslice: cap out of range
stack=goroutine 1372 [running]:
runtime/debug.Stack()
	/usr/local/go/src/runtime/debug/stack.go:24 +0x65
github.com/cloudwego/kitex/pkg/remote/trans.(*svrTransHandler).OnRead.func1()
	/opt/tiger/compile_path/pkg/mod/github.com/cloudwego/[email protected]/pkg/remote/trans/default_server_handler.go:125 +0xcb
panic({0x34c0ac0, 0x3ec5970})
	/usr/local/go/src/runtime/panic.go:838 +0x207
strconv.appendQuotedWith({0xc000832c98, 0x0, 0x2?}, {0x0, 0xb2bd099e05210e}, 0x22, 0xc2?, 0x47?)
	/usr/local/go/src/strconv/quote.go:35 +0x86
strconv.AppendQuote(...)
	/usr/local/go/src/strconv/quote.go:135
fmt.(*fmt).fmtQ(0xc000832c70, {0x0, 0x8?})
	/usr/local/go/src/fmt/format.go:457 +0xe8
fmt.(*pp).fmtString(0xc00147c278?, {0x0?, 0x1a0?}, 0x1a0?)
	/usr/local/go/src/fmt/print.go:452 +0x3a
fmt.(*pp).printArg(0xc000832c30, {0x33cde00?, 0xc0029b9bf0}, 0x71)
	/usr/local/go/src/fmt/print.go:694 +0x60c
fmt.(*pp).doPrintf(0xc000832c30, {0x38910b2, 0x2}, {0xc00147c580?, 0x1, 0x1})
	/usr/local/go/src/fmt/print.go:1026 +0x288
fmt.Fprintf({0x3ec6140, 0xc000d8a6c0}, {0x38910b2, 0x2}, {0xc00147c580, 0x1, 0x1})
	/usr/local/go/src/fmt/print.go:204 +0x75
github.com/luci/go-render/render.(*traverseState).render(0xc00147caf8, 0xc0013cb2c0?, 0x1, {0x33cde00?, 0xc000b91ff8?, 0x0?}, 0x0)
	/opt/tiger/compile_path/pkg/mod/github.com/luci/[email protected]/render/render.go:244 +0xe4f