chore: remove deprecated `addAlias` usage

[thiskevinwang]

Description

This removes usage of the deprecated .addAlias method

Closes https://github.com/serverless-nextjs/serverless-next.js/issues/2470

[slsnextbot]

Handler Size Report

No changes to handler sizes.

Base Handler Sizes (kB) (commit e6367b585fb98608cd2e9327e2c8d4058ba73b00)

{
    "Lambda": {
        "Default Lambda": {
            "Standard": 1578,
            "Minified": 692
        },
        "Image Lambda": {
            "Standard": 1543,
            "Minified": 831
        }
    },
    "Lambda@Edge": {
        "Default Lambda": {
            "Standard": 1588,
            "Minified": 698
        },
        "Default Lambda V2": {
            "Standard": 1580,
            "Minified": 694
        },
        "API Lambda": {
            "Standard": 634,
            "Minified": 318
        },
        "Image Lambda": {
            "Standard": 1551,
            "Minified": 835
        },
        "Regeneration Lambda": {
            "Standard": 1233,
            "Minified": 566
        },
        "Regeneration Lambda V2": {
            "Standard": 1307,
            "Minified": 596
        }
    }
}

New Handler Sizes (kB) (commit 07fb6293cadc9c23df8c32226d3afbc0350b341c)

{
    "Lambda": {
        "Default Lambda": {
            "Standard": 1578,
            "Minified": 692
        },
        "Image Lambda": {
            "Standard": 1543,
            "Minified": 831
        }
    },
    "Lambda@Edge": {
        "Default Lambda": {
            "Standard": 1588,
            "Minified": 698
        },
        "Default Lambda V2": {
            "Standard": 1580,
            "Minified": 694
        },
        "API Lambda": {
            "Standard": 634,
            "Minified": 318
        },
        "Image Lambda": {
            "Standard": 1551,
            "Minified": 835
        },
        "Regeneration Lambda": {
            "Standard": 1233,
            "Minified": 566
        },
        "Regeneration Lambda V2": {
            "Standard": 1307,
            "Minified": 596
        }
    }
}

[codecov[bot]]

Codecov Report

Merging #2471 (07fb629) into master (e6367b5) will increase coverage by 0.03%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2471      +/-   ##
==========================================
+ Coverage   83.85%   83.88%   +0.03%     
==========================================
  Files         102      102              
  Lines        3717     3718       +1     
  Branches     1191     1192       +1     
==========================================
+ Hits         3117     3119       +2     
+ Misses        588      587       -1     
  Partials       12       12              

Impacted Files	Coverage Δ
...rless-components/nextjs-cdk-construct/src/index.ts	94.01% <100.00%> (+0.05%)	:arrow_up:
packages/libs/core/src/images/imageOptimizer.ts	84.51% <0.00%> (+0.41%)	:arrow_up:

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