fix(typings): queryInterface.addIndex

[papb]

Pull Request check-list

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• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
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Description of change

Closes #11816

[codecov]

Codecov Report

Merging #11844 into master will increase coverage by 21.65%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master   #11844       +/-   ##
===========================================
+ Coverage   74.61%   96.26%   +21.65%     
===========================================
  Files          85       94        +9     
  Lines        8358     9191      +833     
===========================================
+ Hits         6236     8848     +2612     
+ Misses       2122      343     -1779

Impacted Files	Coverage Δ
lib/dialects/postgres/connection-manager.js	95.77% <ø> (ø)
lib/dialects/mariadb/connection-manager.js	100% <0%> (ø)
lib/dialects/mariadb/index.js	100% <0%> (ø)
lib/dialects/sqlite/index.js	100% <0%> (ø)
lib/dialects/mariadb/query.js	87.96% <0%> (ø)
lib/dialects/postgres/index.js	100% <0%> (ø)
lib/dialects/sqlite/query.js	98.65% <0%> (ø)
lib/dialects/sqlite/connection-manager.js	100% <0%> (ø)
lib/dialects/postgres/query.js	97.77% <0%> (ø)
... and 30 more

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