LD2410 mmWave sensor no longer recognised in ESPHome

The documentation linked above has the code there to get it to work. Replace your YAML code sections with the example in the documentation.
With the update, all the configuration is now done in HA and not in the ESPHome code so all the gate thresholds are defined differently and in the following format now:

sensor:
  - platform: ld2410
    g0:
      move_energy:
        name: g0 move energy
      still_energy:
        name: g0 still energy
    g1:
      move_energy:
        name: g1 move energy
      still_energy:
        name: g1 still energy

number:
  - platform: ld2410
    g0:
      move_threshold:
        name: g0 move threshold
      still_threshold:
        name: g0 still threshold
    g1:
      move_threshold:
        name: g1 move threshold
      still_threshold:
        name: g1 still threshold

and so on.

You should also try using the search function on this forum. There is a long thread with extensive information on the LD2410 sensor with ESPHome:

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