best practice to overwrite labels when overwriting omni lwc with custom lwc

[heapallocation]

Hi there,

I am attempting to extend and overwrite the omniscriptSaveForLaterAcknowledge LWC as documented here I'd like to change the label used for OmniSaved.

I see from the template that the labels are stored in the _SflLabels property. I was hoping to use a getter to substitute a in a new value for OmniSaved as follows:

import OmniScriptSaveForLater from 'omnistudio/omniscriptSaveForLaterAcknowledge';
import { api } from 'lwc';

export default class CustomSflAcknowledge extends OmniScriptSaveForLater {

    @api
    get _bSflLabels() {
       
        // Get original labels
        const originalLabels = super._bSflLabels || {};
        
        //Return a new object with replaced label
        return {
            ...this.originalLabels,
            OmniSaved: "Your application has been saved successfully!"
        };
    }
}

This approach only returns the OmniSaved label. It looks like the getter I have created overrides the setting of the _bSflLabels. When I remove the getter, I am able to access the labels with super._bSflLabels at the connectedCalback stage, but not constructor stage. I've tried accessing the prototype of the parent to see it had a get I could call with:

const parentDescriptor = Object.getOwnPropertyDescriptor(
                Object.getPrototypeOf(CustomSflAcknowledge.prototype), 
                '_bSflLabels'
              );

but it doesn't have a get. I tried to update the label in the property directly with:

import OmniScriptSaveForLater from 'omnistudio/omniscriptSaveForLaterAcknowledge';
import { api } from 'lwc';

export default class CustomSflAcknowledge extends OmniScriptSaveForLater {
@api
_bSflLabels;

    connectedCallback() {
        try {
            // Override just the specific label
            this._bSflLabels.OmniSaved = "Your application has been saved successfully!";
            console.log('connected labels', JSON.stringify(this._bSflLabels, null));
        } catch (error) {
            console.error('Error occurred:', error);
    
            
        }
        
    }
}

But the property is read-only. Given this I see two options available:

1. Replace the labels used in omniscriptSaveForLaterAcknowledge with my getter
2. Create a second object to store the modified labels, import the template code and change it to use the new getter

Option 1 means that any new labels added to the standard component won't be supported and option 2 means that we would need to maintain the template code going forward, adding any new changes.

Can anyone recommend a different solution/best practice that minimises customisation of the standard LWC.

Any help is greatly appreciated!