fix: participation key error handling

[PhearZero]

ℹ Overview

• adds missing error handler for modals to display messages from in-app errors
• fixes error passed as pointer

[codecov]

Codecov Report

Attention: Patch coverage is 10.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 36.69%. Comparing base (1d4b596) to head (19bb7e2).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
ui/modal/controller.go	0.00%	5 Missing and 1 partial ⚠️
internal/algod/participation/participation.go	0.00%	2 Missing and 1 partial ⚠️

❗ There is a different number of reports uploaded between BASE (1d4b596) and HEAD (19bb7e2). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (1d4b596)	HEAD (19bb7e2)
	3	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #58       +/-   ##
===========================================
- Coverage   49.04%   36.69%   -12.35%     
===========================================
  Files          74       74               
  Lines        5705     5714        +9     
===========================================
- Hits         2798     2097      -701     
- Misses       2702     3519      +817     
+ Partials      205       98      -107     

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