[Enhancement] show persistent index disk cost in be_tablets (backport #35615)

[luohaha]

We can't get the persistent index disk usage from system table now. Add each tablet's persistent index disk usage INDEX_DISK to be_tablets.

mysql> select * from be_tablets where tablet_id = 10121\G
*************************** 1. row ***************************
       BE_ID: 10004
    TABLE_ID: 10119
PARTITION_ID: 10118
   TABLET_ID: 10121
 NUM_VERSION: 4
 MAX_VERSION: 6
 MIN_VERSION: 4
  NUM_ROWSET: 1
     NUM_ROW: 5
   DATA_SIZE: 710
   INDEX_MEM: 119
 CREATE_TIME: 1700701817
       STATE: RUNNING
        TYPE: PRIMARY
    DATA_DIR: /home/disk5/luoyixin/starrocks-4/starrocks/output/be/storage
    SHARD_ID: 48
 SCHEMA_HASH: 1872891624
  INDEX_DISK: 152
1 row in set (0.02 sec)

backport #35615

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.2
  • 3.1
  • 3.0
  • 2.5

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

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[github-actions]

[FE Incremental Coverage Report]

✅ pass : 1 / 1 (100.00%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	com/starrocks/catalog/system/information/BeTabletsSystemTable.java	1	1	100.00%	[]

[github-actions]

[BE Incremental Coverage Report]

❌ fail : 2 / 15 (13.33%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	src/exec/schema_scanner/schema_be_tablets_scanner.cpp	0	4	00.00%	[95, 173, 179, 190]
🔵	src/storage/tablet_updates.cpp	2	11	18.18%	[2748, 2751, 2753, 3890, 3891, 3892, 3893, 3894, 3895]