fix(data explo): SKFP-688 dash in empty cell

[AltefrohneGaelle]

###[BUG] Display dash in empty cells

Description

SKFP-688

Cells fixed :

• Data explo => participant => sex, vital status, Observed Phenotype (HPO)
• Data explo => biospecimen => age

Validation

• Code Approved
• Test Coverage
• QA Done
• Design/UI Approved from design

Screenshot

Before

cell empty

After

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[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟢	Statements	100%	0/0
🟢	Branches	100%	0/0
🟢	Functions	100%	0/0
🟢	Lines	100%	0/0

Test suite run success

0 tests passing in 0 suite.

Report generated by 🧪jest coverage report action from af955f9