Prevent infinite loop when tokens are used in headers or footers

[dontub]

Fixes #71.

Note: setValue() replaces all variables in the document since 0.13.0 (PHPOffice/PHPWord#618) so it's not necessary to execute it in a loop.

I'll add another issue regarding replacement of variables in footers and headers.

systopia-reference: 27046

[dontub]

Strange that Assert\Assertion is not found in this test and only affects one container. Though this is independent of this change.

[jensschuppe]

Does this fix things only in PHPOffice/PHPWord 0.13.0? Do we need to define version constraints for this library with this change?

[dontub]

Does this fix things only in PHPOffice/PHPWord 0.13.0? Do we need to define version constraints for this library with this change?

Moving the call of setValue() outside of the loop can be done with PHPOffice/PHPWord >=0.13.0. CiviCRM 5.54 (which is stated as compatible in the info.xml) requires ^0.18.0 so we can safely do this change. Defining a version constraint is therefore not necessary.

[dontub]

I'll add another issue regarding replacement of variables in footers and headers.

Here it is: #74.