sqlite: support an external sqlite and an internal libproj

If libproj needs a sqlite binary, we need to find it if we're using an external sqlite library.

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Cc: @cory.quammen
Backport: release
Backport: paraview/release

changed milestone to %9.2

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

Warnings:

• please consider adding a changelog entry in a file ending with .md in Documentation/release/dev.

The warnings do not need to be fixed, but it is recommended to do so.

changed the description

Do: merge

mentioned in commit 84942642

mentioned in commit 4826c780

mentioned in commit b9900304

merged

mentioned in issue paraview/paraview#21526 (closed)