chore(ci): increase e2e test(dev mode) timeout to 15m

[yezizp2012]

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Release note

[kwannoel]

Currently the timeout is due to roll back of @BugenZhao 's optimization
#7009, in the pull request: #9752.

TLDR: We can't finish backfill progress on first epoch, since state table can only be committed in second epoch. Which causes an increase in time taken to create materialized view on empty tables.

See this thread for full details: #9752 (comment).

To re-introduce the optimization there's a tracking issue: #9972.

Hence increasing the timeout is correct here for e2e tests, since there are many create materialized view statements on empty tables.

Overall performance should not be affected, see benchmark results: #9752 (comment)

[codecov]

Codecov Report

Merging #9987 (48318b4) into main (e90d704) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #9987      +/-   ##
==========================================
- Coverage   71.13%   71.12%   -0.01%     
==========================================
  Files        1252     1252              
  Lines      210190   210190              
==========================================
- Hits       149510   149491      -19     
- Misses      60680    60699      +19     

Flag	Coverage Δ
rust	71.12% <ø> (-0.01%)	⬇️

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see 6 files with indirect coverage changes

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