Bloom filter bits buffer is not initialized as 0

[acelyc111]

Describe the bug
I found this bug when I run unit tests in ASAN mode,
TEST_F(BlockBloomFilterTest, SP) in be/test/olap/rowset/segment_v2/block_bloom_filter_test.cpp failed definitely.

$ ${DORIS_TEST_BINARY_DIR}/olap/rowset/segment_v2/block_bloom_filter_test
[==========] Running 3 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 3 tests from BlockBloomFilterTest
[ RUN      ] BlockBloomFilterTest.Normal
[       OK ] BlockBloomFilterTest.Normal (1 ms)
[ RUN      ] BlockBloomFilterTest.SP
/home/laiyingchun/ap_doris/be/test/olap/rowset/segment_v2/block_bloom_filter_test.cpp:142: Failure
Expected: ((double)false_count2 / (num * 9)) <= (_fpp), actual: 0.312934 vs 0.05
[  FAILED  ] BlockBloomFilterTest.SP (7 ms)
[ RUN      ] BlockBloomFilterTest.slice
[       OK ] BlockBloomFilterTest.slice (1 ms)
[----------] 3 tests from BlockBloomFilterTest (9 ms total)

[----------] Global test environment tear-down
[==========] 3 tests from 1 test case ran. (9 ms total)
[  PASSED  ] 2 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] BlockBloomFilterTest.SP

To Reproduce
Steps to reproduce the behavior:

1. Run unit test ${DORIS_TEST_BINARY_DIR}/olap/rowset/segment_v2/block_bloom_filter_test in ASAN mode for the old unit test code, or in default (release) mode for the improved unit test code in [SegmentV2] Fix bloom filter bits buffer not initialize as 0 #3372.

Expected behavior
All unit tests should passed.
That is to say false positive proportion of bloom filter should be in a very low proportion as what we specify the parameter when we initilize BloomFilter, for example 0.05.