[ISSUE #7585] Always return duplicate buffer when filter message and fix log format

[lizhimins]

…format

Which Issue(s) This PR Fixes

Fixes #7585

When pull messages from the cache of tiered storage, always return a copy of the byte buffer instead of the buffer itself.

从分级存储的缓存获取消息时，将返回消息 buffer 的副本而不是 buffer 本身。

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (a376fbc) 43.19% compared to head (0a9bba4) 43.14%.

Files	Patch %	Lines
...cketmq/tieredstore/common/GetMessageResultExt.java	0.00%	2 Missing ⚠️
...cketmq/tieredstore/provider/TieredFileSegment.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #7654      +/-   ##
=============================================
- Coverage      43.19%   43.14%   -0.06%     
+ Complexity      9812     9800      -12     
=============================================
  Files           1165     1165              
  Lines          84461    84461              
  Branches       10964    10964              
=============================================
- Hits           36482    36438      -44     
- Misses         43454    43501      +47     
+ Partials        4525     4522       -3     

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[lollipopjin]

LGTM