Merge bitcoin/bitcoin#33106: policy: lower the default blockmintxfee,… #2518

Job	Run time
test each commit	0s
matrix.job-name	0s
ASan + LSan + UBSan + integer, no depends, USDT	0s
Linux->Windows cross, no tests	0s
matrix.job-name	0s
Windows, test cross-built	-1s
	-1s

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