Move field behavior standard method behavior to standard methods

[rambleraptor]

          nit: I think this type of enumeration should belong in the standard methods - it's a big backwards to do this type of cross-referencing about a specific standard method back to a lower-level AEP around behavior.

Originally posted by @toumorokoshi in https://github.com/aep-dev/aep.dev/pull/170#discussion_r1573496067