add ability to write the full event to one singular target field #3995

Job	Run time
build-docs (3.11)	1m 47s
build-docs (3.11)	1m 47s
code-quality (3.11)	56s
code-quality (3.11)	1m 5s
test / rust	20s
test / rust	20s
containerbuild / containerbuild (3.11)	2m 4s
containerbuild / containerbuild (3.11)	8m 5s
containerbuild / containerbuild (3.12)	1m 53s
containerbuild / containerbuild (3.12)	8m 16s
containerbuild / containerbuild (3.13)	1m 48s
containerbuild / containerbuild (3.13)	8m 29s
test / python (3.11, unit)	1m 58s
test / python (3.11, unit)	1m 58s
test / python (3.11, acceptance)	1m 52s
test / python (3.11, acceptance)	1m 52s
test / python (3.12, unit)	2m 12s
test / python (3.12, unit)	2m 12s
test / python (3.12, acceptance)	1m 55s
test / python (3.12, acceptance)	1m 55s
test / python (3.13, unit)	2m 16s
test / python (3.13, unit)	2m 16s
test / python (3.13, acceptance)	2m 27s
test / python (3.13, acceptance)	2m 27s
	1h 2m 10s

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