bug: fix printable for ir xds

[arkodg]

No description provided.

[zirain]

can you share more details about this? I think related to security?

[arkodg]

can you share more details about this? I think related to security?

yes was added in #607, but recently broke

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (2feae69) 64.70% compared to head (d008806) 64.71%.

❗ Current head d008806 differs from pull request most recent head ec95fc7. Consider uploading reports for the commit ec95fc7 to get more accurate results

Files	Patch %	Lines
internal/ir/xds.go	44.44%	5 Missing ⚠️
internal/ir/infra.go	0.00%	3 Missing ⚠️
internal/gatewayapi/runner/runner.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2512      +/-   ##
==========================================
+ Coverage   64.70%   64.71%   +0.01%     
==========================================
  Files         116      116              
  Lines       17576    17581       +5     
==========================================
+ Hits        11373    11378       +5     
- Misses       5476     5477       +1     
+ Partials      727      726       -1     

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