Why bother with an angled deck when the 076 is still very much an LHD in the first place (except with certain amount of additional aviation facilities)?
In fact, the number of fixed-wing aircrafts (both manned and unmanned) that will be fielded onboard the 076 LHD are much smaller than the number you typically see on proper CVs, apart from the fact whereby fixed-wing aircrafts will often occupy smaller portions of the entire airwing on the LHD (fixed-wing ≈ rotary if not fixed-wing < rotary) when compared to airwings onboard proper CVs (fixed-wing >>> rotary) anyway.
These two factors will result in a significantly lower rates of CATO and BAR operations for LHDs than proper CVs, which means an angled deck is not really a must-have for the 076.
This applies the same, even if/when the 076 LHD is to perform in the "lightning carrier" role similar to the America LHAs.