Add check if sample details exists before applying absorption correction in diffraction script

[MohamedAlmaki]

Description of work

This PR adds a check before applying absorption corrections in powder diffraction scripts. Previously, the error wasn't clear. This addition is added to make sure the error message is clear.

Fixes #36017.

Further detail of work

To test:

1- Run the following script in Python editor (contact me for the files):

from mantid.simpleapi import *
from isis_powder.osiris import Osiris
from isis_powder import SampleDetails

osiris_focus = Osiris(
    user_name="Calib",
    output_directory=r"C:\Users\joy22959\Documents\test_files\osiris\OsirisCalibrationFiles\output",
    config_file=r"C:\Users\joy22959\Documents\test_files\osiris\OsirisCalibrationFiles\Config.yaml",
    calibration_directory=r"C:\Users\joy22959\Documents\test_files\osiris\OsirisCalibrationFiles\Calibration_files",
    calibration_mapping_file=r"C:\Users\joy22959\Documents\test_files\osiris\OsirisCalibrationFiles\Calibration_files\osiris_run_mapping.yaml"
)

sample_details = SampleDetails(radius=1.1, height=8, center=[0, 0, 0], shape='cylinder')
sample_details.set_material(chemical_formula='Cr2-Ga-N', number_density=10.0)
sample_details.set_container(
    chemical_formula='Al',
    mass_density=2.7,
    radius=1.2
)

# osiris_focus.set_sample_details(sample=sample_details)

osiris_focus.create_vanadium(run_number="120033")

osiris_focus.focus(
    run_number="120033",
    absorb_corrections=True,
    merge_drange=False
)

2- You should see a value error
3- Uncomment the set_sample_details call and the script should run normally

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[warunawickramasingha]

I followed the same steps on a Windows machine and at step 2, I am getting an Attribute error rather than a Value error like below. However after step 3, there are no errors and the script succeeds.