[optimize] http client X-Request-Timeout value wrongly assigned

[UnderTreeTech]

Here at line 145 we should use timeout that calculate out between line 129~136, but not c.config.Timeout

waterdrop/pkg/server/http/client.go

Lines 129 to 145 in e57e676

	// adjust request timeout
	timeout := c.config.Timeout
	if deadline, ok := ctx.Deadline(); ok {
	derivedTimeout := time.Until(deadline)
	if timeout > derivedTimeout {
	timeout = derivedTimeout
	}
	}
	ctx = metadata.NewOutgoingContext(ctx, metadata.MD(request.Header))
	ctx, cancel := context.WithTimeout(ctx, timeout)
	defer func() {
	span.Finish()
	cancel()
	}()
	request.SetHeader(_httpHeaderTimeout, strconv.Itoa(int(c.config.Timeout/1e6)))

[UnderTreeTech]

#44