BUG #17969: Assert failed in bloom_init() when false_positive_rate = 0.25

The following bug has been logged on the website:

Bug reference: 17969
Logged by: Alexander Lakhin
Email address: exclusion(at)gmail(dot)com
PostgreSQL version: 16beta1
Operating system: Ubuntu 22.04
Description:

The following script:
CREATE TABLE tbl (i int);
CREATE INDEX idx ON tbl USING brin (i int4_bloom_ops(false_positive_rate =
0.25));
INSERT INTO tbl VALUES(1);

triggers an assertion failure:
TRAP: failed Assert("(false_positive_rate >= BLOOM_MIN_FALSE_POSITIVE_RATE)
&& (false_positive_rate < BLOOM_MAX_FALSE_POSITIVE_RATE)"), File:
"brin_bloom.c", Line: 282, PID: 1062784

Reproduced starting from 77b88cd1b.

With false_positive_rate = 0.2500000000000001 I get
ERROR: value 0.2500000000000001 out of bounds for option
"false_positive_rate"
DETAIL: Valid values are between "0.000100" and "0.250000".

Maybe that Assert is not needed at all...