Fix dp3m ifdefs; dawaanr-and-bh-gpu testcase requirements

[pkreissl]

1.) Due to wrong #ifdefs, ESPResSo build failed when trying to build with DIPOLES and without ELECTROSTATICS feature:

In file included from /tikhome/pkreissl/git/espresso/src/core/initialize.cpp:40:0:
/tikhome/pkreissl/git/espresso/src/core/electrostatics_magnetostatics/p3m-dipolar.hpp:102:3: error: ‘fft_data_struct’ does not name a type; did you mean ‘MPI_Type_struct’?
   fft_data_struct fft;
   ^~~~~~~~~~~~~~~
   MPI_Type_struct

This issue was introduced in PR #2455.

2.) The testcase dawaanr-and-bh-gpu.py requires both DIPOLES and PARTIAL_PERIODIC feature. However, as it didn't check for the latter, the testcase failed when building with DIPOLES and without PARTIAL_PERIODIC feature.

Description of changes:

• Described issues are fixed by this PR

[codecov]

Codecov Report

Merging #2477 into python will decrease coverage by 1%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           python   #2477     +/-   ##
========================================
- Coverage      71%     69%     -2%     
========================================
  Files         486     423     -63     
  Lines       30366   23701   -6665     
========================================
- Hits        21610   16478   -5132     
+ Misses       8756    7223   -1533

Impacted Files	Coverage Δ
src/core/electrostatics_magnetostatics/fft.cpp	89% <ø> (ø)	⬆️
src/core/observables/ParticleAngularVelocities.hpp	0% <0%> (-100%)	⬇️
...core/observables/ParticleBodyAngularVelocities.hpp	0% <0%> (-100%)	⬇️
src/core/object-in-fluid/oif_local_forces.cpp	0% <0%> (-100%)	⬇️
src/core/observables/ParticleBodyVelocities.hpp	0% <0%> (-100%)	⬇️
src/core/observables/MagneticDipoleMoment.hpp	0% <0%> (-100%)	⬇️
src/core/utils/math/triangle_functions.hpp	0% <0%> (-92%)	⬇️
src/core/actor/ActorList.cpp	0% <0%> (-80%)	⬇️
src/core/constraints/HomogeneousMagneticField.cpp	0% <0%> (-80%)	⬇️
src/core/object-in-fluid/oif_global_forces.cpp	<1% <0%> (-73%)	⬇️
... and 217 more

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