fix Tech|*|Capital Costs|w/ Adj Costs to reference run

[orichters]

Purpose of this PR

• fix Tech|*|Capital Costs|w/ Adj Costs on reference run
• for t <= cm_startyear, the paramater o_avgAdjCostInv was just 0 which caused remind2::reportTechnology to forget about adjustment costs. See longer problem description here: https://github.com/remindmodel/development_issues/issues/226
• I did not run a full remind to check whether that fixes it, as the error seems obvious and I checked that the variables used to calculate the output parameter remain unchanged between fulldata.gdx and input_ref.gdx, so that must work :)

Type of change

• Bug fix

Checklist:

• My code follows the coding etiquette
• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• All automated model tests pass (FAIL 0 in the output of make test)
• The changelog CHANGELOG.md has been updated correctly