fix: keep the tab order

[US579]

SUMMARY

When export all tabs to a PDF in report & alert, user noticed that the all tabs export doesn't seem to export the tabs in any specific order (our report with 3 tabs exported with tab 2, then 3, then 1 in the PDF)

reference: #30694 (comment)

Context

The exported tabs are now ordered based on the sequence of anchors under the all_tabs field from the tabs endpoint response. This enhancement aligns the export order with the order displayed on the dashboard.

BEFORE PDF

before.pdf

AFTER PDF

after.pdf

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[US579]

FYI @yousoph

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.92%. Comparing base (76d897e) to head (48dc387).
Report is 955 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #30888       +/-   ##
===========================================
+ Coverage   60.48%   83.92%   +23.43%     
===========================================
  Files        1931      536     -1395     
  Lines       76236    38931    -37305     
  Branches     8568        0     -8568     
===========================================
- Hits        46114    32673    -13441     
+ Misses      28017     6258    -21759     
+ Partials     2105        0     -2105     

Flag	Coverage Δ
hive	48.85% <12.50%> (-0.31%)	⬇️
javascript	?
mysql	76.79% <100.00%> (?)
postgres	76.88% <100.00%> (?)
presto	53.33% <12.50%> (-0.47%)	⬇️
python	83.92% <100.00%> (+20.43%)	⬆️
sqlite	76.34% <100.00%> (?)
unit	60.87% <12.50%> (+3.24%)	⬆️

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[rusackas]

LGTM, but @eschutho might be better poised to actually test this before approving/merging.