add support for .f format

[adhami3310]

closes #2148

from math import pi
import reflex as rx

app = rx.App()


class State(rx.State):
    field: float = pi


@app.add_page
def index():
    return rx.text(f"What {State.field:.2}")

[codspeed-hq]

CodSpeed Performance Report

Merging #4855 will not alter performance

_{Comparing add-support-for-.f-format (49001ba) with main (8943341)}

Summary

✅ 12 untouched benchmarks